Rio Takahashi

High school student Shun Takahata is bored. Bored with the day-to-day monotony of school and life, he prays for change, for something exciting. Suddenly, he and his classmates are forced to play deadly children's games and facing terrifying creatures from a talking Daruma doll to a sharp-clawed lucky cat.

An unemployed man learns that his ex-girlfriend was murdered. He suddenly finds himself travelling through time to his middle school years and has chance to change the future and save the girl. He aims to rise to the top of the most brutal delinquent gang.

A school appears peaceful from a distance, but a fierce gambling battle takes place once again. Yumeko Jabami is involved in the battle.

The first-person protagonist is a 27-year-old freelance writer who returns to her hometown from Tokyo, and she gets together with high school friend Satsuki and cameraman Suga to see Shiina, who they all admired in high school. Along the way, vivid memories from high school replay in the protagonist's mind.

Ryota Moriyama, a senior at Kyoritsu University, receives a job offer at a first-rate company but gets dumped by Saki Nishino. His professor tells him that he can graduate on the condition that he joins the sumo club and competes in at least one match. With only a single member, Honoka Oba, for the past two years, the sumo club is on the brink of collapse. In order to graduate, Ryota endures Honoka’s strict training methods and starts to recruit other members.