Something's Wrong With Us manga volume 15 features story and art by Natsumi Ando.

Nao and Tsubaki's hunt to uncover the truth of the incident that changed their lives leads them to a secluded house in the mountains. There, they meet Takigawa's father, a man thought to be dead. And what he shares with them changes everything. Nao and Tsubaki think they're ready to know what happened the night Itsuki was killed, but are they really prepared to learn the culprit's identity?