在一切晴朗的日子里｜On all clear days Steam-Diagramme & Statistiken

This is an ADV game work in the style of short story writing. On a sunny holiday, the main character returns with his sister to the place where he went when he was a child. "There are so many things I want to say to her, and I want to tell her that I wish I could live with her like I used to.