Sekai ka Kanojo ka Erabenai

Kouki Nakagawa had finally gathered the courage to confess his feelings to Ayumi Fujisaki, his longtime childhood friend. Just as he was about to speak, a strange girl appeared out of nowhere, claiming to be Kouki’s girlfriend. Both Kouki and Ayumi were left stunned and confused. Determined to clear things up, Kouki tried approaching Ayumi once more, pouring out his heart to her. But before she could respond, the enigmatic girl, Jindou, interrupted again. She delivered an ominous ultimatum—unless Kouki agreed to be with her and erased Ayumi from his heart, the entire world would face annihilation. Now, Kouki finds himself torn between love and an impossible choice that could determine the fate of everything.