Anthology of one-shots in which a certain brand of konpeitou allows the protagonist(s) to travel back in time.Omoide Konpeitou

A track team star meets her role model—the brother she never had a chance to meet.Takeover Zone

A beautiful girl confronts her former self after being dumped by her boyfriend.Samazama no Koto Omoi Dasu...

A saxophone prodigy wakes up to find a teenage-version of an old man she knows and plays with his band.Punk Rock Mother Goose

A girl and her childhood friend bump into her mother that left her to perform in her band.

(Adapted from: MU)