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English
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Published:
2026-06-03
Updated:
2026-06-04
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2,717
Chapters:
2/?
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3
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Flowers in my lungs- Sunheng Hanahaki AU

Summary:

Sunday thought it was just a normal sickness and nothing that much serious, he was trying to rest his mind after the fight with Fulwish. But to his nightmare, what would happen if his sickness is not truly good involved with Shuhu and Yaoshi of his unrequited love with the Data Bank archive . Now he must choose once, do his surgery, confess his real feelings or worse die in his journey. What decision will Sunday take?

Or... Hanahaki Disease Sunheng, of a AU after 4.2 story and before the events of 4.3

Notes:

(See the end of the work for notes.)

Chapter Text

Back then in the Tower where they fought Fulwish...

Blade, Sunday, Ashveil, DH and Stelle were fighting against Fulwish as Stelle received her Elation weapon after she got a cut from Fulwish and almost died

Fulwish nightmare finally ended but Shuhu was still there and could be a danger to Planarcadia and they couldn't let that happen so Blade offered up himself to order Shuhu himself 

Dan Heng and Silver Wolf were against it

Ashveil and Stelle didn't looked truly positive for him to do that 

Sunday then stepped up, offering up to use tuning of thousands of people to help Blade  

Dan Heng looked like he wanted to strangle him of what he just said 

Stelle also looked the same 

Ashveil had the fear in his eyes of losing another person which is why he didn't truly let easily Sunday commit that risk, saying countless of people are already infected and they would be adding another victim

But Sunday responded "Mr. Ashveil, they will be always people who do stupid things"

And thus the plan started in the citizens offering up their fear for Blade to start 

Sunday stood ok rhe ground with veins around him while using his power as Stelle was crouched behind him, still worried that something could happen to him as Ashveil was up there looking at a screen and Dan Heng stood behind next to Blade who was near Shuhu about to execute his plan

Shuhu did glow as Blade held his head in pain

Sweet dreams come to an end" Sunday narrated in his head as he stood in the ground before he started floating as he opened his eyes thst held tears "This time... I will defend everyone's right to feel pain" 

 

The power of Harmony did glow golden traveling before in the sky it appeared a rift of the Harmony Power 

Ashveil looked at the screen in concern at Sunday and then at the screen as red circles appeared as the other infected in the city quickly got absorbed by the Harmony as Welt and March looked at each other realizing it's Sunday's doing while they held a concerned face 

Not only because of Planarcadia 

But because of Sunday being a high chance to be corrupted 

The Harmony power continued as Sunday was trying to hold his ground still, he looked tired but looked determined to not let Planarcadia go into terrible shape as more red circles appeared in the screen before inside the Harmony power veins appeared stabbing Blade 

"The time has come, SHUHU-" Blade screamed in agony looking in the sky as more veins appeared and Ashveil looked at his arm, thinking if he should help in the crisis 

Dan Heng rushed after Blade after transforming into his Imbitor Lunae power restraining Blade as the both held the vine together to stab it 

Suddenly, a vine appeared in Sunday direction before stabbing him 

"SUNDAY-" Stelle screamed at the sight of Sunday stabbed but he just tried harder ignoring what happened to him and the blood on his mouth 

Ashveil looked alarmed at Sunday 

Blade and Dan Heng finally stabbed it bringing peace to Planarcadia and after Silver Wolf erased Shuhu from Planarcadia 

Everybody held their breaths as Blade collapsed tired 

Sunday finally let go of his hands before passing out of the pain but Stelle catched him, concern on her 

 

____________________________

Dan Heng went with Blade and Yaoguang to discuss about Blade funeral as Silver Wolf left, Sunday was on his feet already after he got helped by Ashveil who was worried about him

Before Blade left, he glanced at Sunday chest with furrowed eyebrows where he was stabbed, looking like nothing happened to him but Blade got the feeling something happened to him before leaving 

and then Himeko appeared worried before she went to Sunday direction to hug him 

"Sunday, I was worried! Are you alright?" Himeko asked softly as Sunday nodded 

"I'm alright, no need to worry for me, Mrs. Himeko" Sunday said smiling 

Himeko smiled nodding before glancing at Stelle who looked like she had a scratch in her shirt before turning serious "Oh my god, what happened to you, Stelle?" Himeko asked worried 

Stelle rubbed her head with her hand "Let's say... Crazy things happened hehe" Stelle laughed nervously as Himeko smiled

"I'm just glad you both are alright, you both mjst be tired from what happened today, especially you, Sunday from what you done was risky" Himeko said her tone serious as Sunday stood quiet 

 

Sunday stood quiet, not denying it 

 

Stelle yawned "I'm so tired, a night sleep would be enough for me, let's go Sunny!" Stelle said dragging Sunday away as he laughed with her before he felt a chill under his spine looking in the sky where originally Shuhu was before he coughed weirdly but decided to stop thwt feeling and go along with Himeko and Stelle 

Little they didn't know, Sunday is cursed by Yaoshi 

 

And about to become their victim 

 

The scene stays quiet as a flower that Sunday unknowingly coughed with blood stays on the ground 

 

___________________________

 

 

Chapter 2: Coughing a flower is not normal

Summary:

Sunday day gets worse when he finds out Shuhu and The Abundance did something terrible to him related to his crush

Notes:

TW:
Vomiting
Blood throwing up

Chapter Text

Sunday, Stelle and Himeko finally arrived to the Express where March and Welt were on the parlor car, Welt was reading a book Meanwhile March was looking at the news before they found their eyes and March quickly run to hug Stelle 

March gripped Stelle in the hug "Oh my god, I'm glad you're alright! Are you hurt anywhere?" March says scanning her face softly as Stelle shook her head trying to get March to stop doing that sincr she was embarrased until March noticed something red like a wound in Stelle shirt as she took off Stelle jacket "What on earth happened to you?!" 

 

Himeko smiled fondly at her worry "Don't worry, Stelle is alright, she simply got a wound from Im going to assume is from Fulwish, right now, Stelle and Sunday need some rest" Himeko said 

 

March nodded remembering as she then next huffed Sunday as Sunday was a bit surprised but hugged her back in adoration as he smiled "It's good to see you, Miss March"

March nodded before pulling back "Are you also alright? We saw you use the power of Harmony" March said, a tone of worry 

 

"March, I think it's time for Sunday and Stelle to rest a little bit from what happened, after all, today was a long day" Welt said, his soft kind and soft and more at Stelle and Sunday shape "Pompom is already creating meals for all of us" 

 

"You waited for us to eat?" Himeko  asked 

"Yeah! We couldn't just eat without you guys!" March says beaming up "By the way, where is Dan Heng?"

 

"Oh, he went to talk with the General and Blade, said he later would come" Stelle answered as Sunday didnt offered an answer because he was thinking of Dan Heng and his relationship with Blade 

 

Stelle had told him that Blade and Dan Heng back then many years used to be lovers and married but a accident happened that left them conflicted. Sunday had nothing against their relationship, but he was jealous of their relationship right now because he has a crush on Dan Heng but certainly is possible Dan Heng wouldn't like him back. 

Sunday felt a headache taking his head in exhaustion, as his vision was getting dizzier ignoring the voices until he accidentally stumbled snd was caught by Stelle 

 

"SUNDAY!" Stelle yelled in concern as everybody look at him in concern 

 

Sunday slowly regained consciousness from what happened "Yeah?"

 

Welt steps closer to check on him holding a hand on his cheek "Sunday, are you alright? You don't look well" 

 

"Must be after tuning with hundred of people" Himeko said, worry on her voice "Stelle, please take Sunday with you to his room, he needs to rest, I'll tell Pom-Pom to prepare a meal healthy for him" Himeko said as Stelle nodded, taking Sunday with her as she felt he's a little light 

Stelle put Sunday softly to the bed as he groaned and she looked at him with concern "Do you need anything else, Sunny?" 

 

Sunday shook his head "Don't worry about me, I'm that well" Sunday said but Stelle didn't buy it as she went to the private cabinet and brought a extra pillow for Sunday and a bird plushie she had bought online and wanted for Sunday to have it 

 

Sunday stared at the bird plushie that looked like him "What is this?" 

 

Stelle responded cheerfully "Oh, is just a bird plushie I bought for you, I was going to give it to you but with the crisis of Fulwish and other things, I wasn't able to give it to you" Stelle said smiling 

 

Sunday chuckled at her "I see, thank you for the gift" Sunday said smiling at her 

 

Stelle nodded smiling before she went to another topic "Are you alright? I can get painkillers if you want, you don't look well and I doubt Pompom meal can help you back to normal" Stelle asked

 

"Hm... Painkillers would do well" Sunday said as Stelle nodded, quickly rushing to her feet running to the cabinet where painkillers are ignoring Pompom "NO RUNNING IN THE KITCHEN!" as she retrieved them and brought them back to Sunday room for him to take as Sunday looked surprised how fast she was before he chuckled already used to her shenanigans

Stelle then yapped about whaf she did in Planarcadia tje first time they went until tje door opens revealing Pompom holding a tray for Sunday "Himeko told me you feel ill so Pompom made you a meal healthy properly for you to eat!" Pompom said moving their feet as Sunday kindly took the tray and started eating 

 

Stelle patted his head "Have a good night, Sunny!" Stelle said with a wink before she and Pompom left 

 

Now his room was quiet except with the new album of songs that Robin, his sister, had just released. He always likes to hear her albums as he watched the Planarcadia night sky seeing tje moon winking at him as he looked at it in confusion before it left leaving him alone as he sighed, feeling a headache before taking another painkiller for his headache 

He must admit today was exhausting and especially with the Fulwish thing and the tuning 

 

He was thinking when he again remembered getting stabbed but his wound didnt seemed affected 

 

He wondered why he hasn't gotten like poison 

 

Why he hasn't been feeling bad 

 

Anyways, maybe he should leave those questions for tomorrow and take a night sleep 

 

Sunday closed his eyes clinging on the bird plushie Stelle gave him as the sleep took him out 

 

___________________________

 

A unrequited love 

Those feelings shall be forgotten or returned

Either what option he chooses 

Time is running out… 

____________________________

In the kitchen: 

 

Everybody already woke up; 

 

Himeko was drinking her coffee as always 

Welt was reading a new comic of Power Rangers he was given by Pearl 

March was scrolling through her photos and what new memories should she take 

Dan Heng was reading a book but still thinking about what happened to Blade yesterday 

Stelle was looking at her Cat Trash of Ruan Mei species that Ruan Mei told her to take a look at it 

And Pompom was making the meals for breakfast 

But Sunday was missing 

Pompom finally finished "Every meal for everybody is here- Wait where is Passenger Sunday?" Pompom asked confused, Sunday normally would be reading a book along with Welt or engage in conversations with Dan Heng 

 

Himeko remembered "He was pretty tired yesterday, perhaps he overslept" Himeko said 

 

March looked at her girlfriend "He was fine yesterday right?" 

 

Stelle shrugged off "I just gave him a extra blanket, bird plushie and some painkillers so he should be fine. He perhaps overslept or is listening Miss Robin recent album" Stelle said 

 

Dan Heng decided to ask about his condition "He was fine yesterday right?" 

Stelle nodded "Yeah, just in pain and like needed sleep" Stelle said nonchalantly 

 

Himeko looked at March "March, can you check on Sunday and tell him breakfast is ready?" Himeko said as March nodded cheerfully as she jumped to get Sunday from his room. 

 

In the room, she heard Robin recent album on replay, the Halovian thing on Sunday desk, a bunch of painkillers like they were used frequently in one night and Sunday asleep in the bed with no movement 

 

"He looks truly ill...' March thought but then remembered she had to wake up "Hey, sleepyhead Halovian! Wake up~" March said shaking Sunday as he croaked out of his sleep and sat and noticed March 

 

"Miss March?" 

"Yeah it's me, silly! Breakfast is ready! We are waiting for you- wait why your face has much heat? Are you still sick?" March asked noticing Sunday 

 

Sunday shook his head "No, I'm not sick, I'm alright but thanks for asking" Sunday says smiling 

 

March didn't buy it but didnt said anything "Alright then, get up to get some delicious breakfast" March says exiting the room as Sunday sighed, he stood up to shut off Robin music replay and started cleaning up his room and everything slowly before he finished as he dressed up and exited his room to the kitchen where he found everybody eating

Dan Heng looked at him with a soft smile "Good morning, Sunday" Dan Heng said as Sunday nodded smiling back as Sunday wondered he was just being friendly or he was in love with him also but since Dan Heng has history with Blade, he highly doubts that as he sat in the table to eat

 

"You are so lucky, Pompom saved rhe pancakes for you" Stelle said, playful jealousy on her 

 

"Erm, if you want I can give you them" Sunday said offering his tray 

 

"No" The Crew all said except Stelle who didnt protested as Sunday looked surprised at their objection but didnt said anything as he continued to eat anf listening to the others conversations of what happened yesterday 

"-So Dan Heng what happened with Blade?"

 

Dan Heng spoke "Apparently, the General made plans with Blade to use Voracity to end Shuhu but they are still making preparations sincr Blade needs to regain his head whuch is why I was there to help him calm down" Dan Heng says sounding pretty worried 

 

Sunday stood quiet at what he said, he knows he shouldn't be jealous when Dan Heng doesnt really love him but he cannot help but feel jealous about their relationship despite the fact that Blade and Dan Heng have more history than him and Sunday 

 

Still, he still made sure to pay attention of tje details but he couldn't help but that something is wrong in his lungs like he couldn't breathe 

Nothing happened to him

 

Why he is feeling weird? 

 

Suddenly in the middle of the conversation, Sunday suddenly felt weird as he started coughing violently trying not to spit tje thing he wanted alerting everybody 

 

"Sunday, are you alright?!" March yelled worried 

 

"-Any allergy Halovian in the meal?"

 

"No, Pompom made sure to not put any allergy or poison for Halovians!" 

 

Stelle was patting Sunday back to help him when Sunday abruptly stood up turning around to look for the bathroom before he stumbled in the wall making worried glances at him 




"Sunday, please sit down-" Himeko tried to say but Sunday already left the meal table and went directly to the bathroom locking the door before he threw up in the toilet 

 

He opene this eyes finally anf felt something in his hand as he looked at it but then his eyes widened 

 

A bloody flower 

 

How is it possible?

 

Humans cannot cough flowers!

 

Sunday stood quiet not knowing what the hell happened 

 

He coughed up just a flower?! 

 

THERES no way humans are able to cough flowers 

 

And not even they cough with blood 

 

What the fuck happened... 

 

Whatever happened to him yesterday, it didn't end well... 

 

Sunday put the flower in tje toilet so it could get away hoping it was nothing before flushing the toilet as he sighed, trying to regain his posture from what happened

 

The thing he needs to figure out now is: 

 

How the fuck 

 

He is coughing flowers with blood... 

____________________________________

 

Notes:

Sunday suffering starts next chapter :)