>>48854905ok hear me out.
The PWC match ends. Ash gets whatever place, maybe he wins. Whatever the case, huge celebration for what he's achieved, photo's are taken and everything.
Leon comes up to Ash after the celebration, talks to him one-on-one, says he has an opportunity for him to get even stronger, face strong trainers regularly and improve his relationship with all sorts of Pokemon.
Ash's eyes light up, but he keeps the news to himself while he decides.
Ash/Go fly home, Ash inevitably decides that he's going to take Leon up on his offer and the next day goes to tell Go about his decision, but Go seems to be missing.
Ash wonders around the Sakuragi Institute looking for him and asking Professor Sakuragi if he's seen him. Finally he comes across a closet. Opening it he finds
the corpse of Tokio, with yandere-esque messages written all over his body and inside the room he was trapped in about how 'you'll never leave me like you did again'.Final scene is Ash's reaction as he realizes what he's just walked into. 