Baumucken End Credits inspired BFDI AU (Not post split inspired)

TW: Gore, Suicidal thoughts, suicidal ideation/ideas, Blood, Cutting | After all that One stuff, the show only continues on. With Four and X back together and everyone is back in the timeline with One somehow is still on the loose. So when Four and X are on a picnic a few days later One invites herself in. Four holds a grudge to her but X develops a crush on her, and later begins dating because of this, Four literally becomes depressed Two for a few weeks. And soon enough becomes obsessed with X. Doing anything to get him back. One is lying about her love. But only time will tell what happens to Four, will he become himself again, or will he end up doing suicide? (Yes I know, very traumatic but I gave you trigger warnings)