Kono Yo no Hate de Koi wo Utau Shoujo YU-NO: Mugen no Heiretsu Sekai

Inside the Tree of Vrinda, Takuya and Yu-No are confronted by the countless parallel worlds that could have existed. Lives diverge with a single choice, and familiar people appear along paths where happiness and tragedy take very different forms.

Among those possibilities, Takuya sees Mitsuki trapped once again by the fate he remembers. Faced with a world that might have been, he reaches toward one particular moment and tests whether knowing the roads not taken can offer even a small chance to change an ending that once seemed unavoidable.