Tenran no Momento
天藍のメメント
Akashi Chika is a laid-back high school student who leads a quiet, uneventful life, except for recurring dreams featuring a girl in a kimono who appears tidy and composed. Though he doesn't know her name, he feels a strong sense of nostalgia toward her. As he continues with his routine, a bizarre, otherworldly creature suddenly appears, disrupting his normal life and triggering the return of long-forgotten memories that had been locked away.