Yurige Sekai Nanoni Otoko no Ore ga Heroine Shimai wo Shiawase ni Shite Shimau made

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)