The Night Before My Proposal, I Want to fuck My Ex-Girlfriend ‘Aoi Tsukasa’ Before It Becomes an Affair…

High school student Aoi Aioi lives with her elder sister, Akane, after a tragic accident took their parents away 13 years ago. Because Akane has since been taking care of her single-handedly, Aoi wants to move to Tokyo after her graduation to relieve her sister's burden and pursue a musical career, inspired by Akane's ex-boyfriend Shinnosuke "Shinno" Kanamuro. Shinno was part of a band until he left for Tokyo to become a professional guitarist after the sisters' parents passed away, and he was never to be seen again.

At Kichijōji Station, Tokyo, Taku Morisaki glimpses a familiar woman on the platform opposite boarding a train. Later, her photo falls from a shelf as he exits his apartment before flying to Kōchi Prefecture. Picking it up, he looks at it briefly before leaving. As the aeroplane takes off, he narrates the events that brought her into his life...

At her 25th high school reunion, Peggy Sue faints and awakens in 1960—back in her senior year, before her marriage and all her regrets. Given a second chance to relive her youth, she must decide whether to change the choices that shaped her life or embrace the past that made her who she is.

Two people meet each other after missing the last train home, leading to a beautiful relationship over five years.

A high school girl wakes up each day with no memory of the day before. When she agrees to date a shy classmate, Toru, he begins to fall for her—despite her rule against falling in love.