1 Work by Osheanan
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Corestrings: Filler Festival date by Osheanan
Fandoms: Deltarune (Video Game), Undertale (Video Game)
23 Jun 2026
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Summary
Player on their third playthrough and save file of chapter five manages to convince Gaster to go on a date with them to "show what a first date should be like." After Kris' and Susie's dates fall apart, Kris pulls the Soul out and throws them into a box to create the next Dark Fountain. Player and Gaster get some much-needed bonding and time spent together, with the looming threat of the plot chasing them behind.
Well, more like everyone desperately needs Player to go back to being a heart and Gaster to go back to the void, so everyone can actually have a winning chance and the plot to progress.