When Kaito Sickino attended the funeral of a relative, he ended up taking in four orphaned sisters. And that was when he recalled his previous life and realized that he was in a game world. He also realized that if he followed the plot, the four sisters, Chiharu, Chinatsu, Chiaki, and Chifuyu, who have had an unfortunate life up until now, will have to face an even more unfortunate future. Kaito decided that he must help the four sisters to be happy! The happy days spent with Kaito helped to ease the wounds and worries of each girl. Kaito's warm and sincere words open the hearts of the four sisters, all living under one roof, each with their own unique personality! (Source: Overlap, translated)

Included one-shots: Volume 1: Ai to Sukiyaki, Ai to Pineapple

The story will focus on the untold past of Tsukuyomi Momoka and Ousuke Momokado.

The story takes place a little in the future. Guided by one particular song, young elementary-schooler Suzuhara Sorata, from the Heisei Era, is warped through a time skip to an unfamiliar place that looks much like the towns from the Meiji or Taishou period from his textbooks. In this world, he meets three young ladies and nine young men and joins them on a journey aboard the mysterious Norn ship, a giant globe that floats in midair.