Manga format; reads from back to front, right to left

"Childhood friends Koutarou Fujiki, Kajiwara, and Fuyuko thought they would always be together. They spent their youth in a strange love triangle, the two boys fighting over who would date Fuyuko. But suddenly one day, that life ends. Kajiwara goes missing, and Koutarou takes his sweetheart's hand in marriage. Now middle-aged, Koutarou is left to wonder--would his wife have chosen differently if Kajiwara was still around? On a visit to his hometown, the memories come rushing back..."--Publisher

"First published in Japan in 2022 by Kadokawa Corporation, Tokyo."--colophon

Older Teen (16+)

In English, translated from the Japanese