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[lost story] 2015–2016 deviantart multipart wg story ("jase" / "jassey" / "jason")

Hi everyone, I'm trying to track down an old multipart weight gain story I read on DeviantArt around 2015–2016. The author's account was likely banned years ago during DeviantArt's purges, so I'm hoping someone might have saved a text copy or remembers the author's name/title.
Here are the plot details I remember:
• Main Character: A boy named something like Jase, Jassey, Jace, or Jason.
• Plot Progression: He starts gaining a massive amount of weight, initially encouraged/fed by his mother.
• Staying with his Aunt: Later in the story, he is sent to live with his aunt, who continues fattening him up even more (and eventually he returns to his mother, who keeps the weight gain going).
• The Cousin Subplot: While staying at his aunt's house, he lives with his cousin, who is initially very fit. Because of the main character's influence and all the food around, the fit cousin starts gaining a little weight too. The cousin is eventually forced to take measures (dieting/working out) to lose it because the aunt's husband (the cousin's dad) is very strict about his son's physique.
Does anyone recognize this series, remember the author's DeviantArt username, or happen to have an archive/mirror link for it? Any help would be appreciated!
2 days