Ui's relationship with Yui is as sweet and pure as a sibling relationship can get. But after a failed stayover with Yui, a second year student sets out to help Ui stand up against her sister, convinced that their relationship has a hidden toxic side to it. With some help, Ui does everything she can to solve this situation and prove that her bond with Yui is genuine.
Rated: T - English - Drama/Family - Chapters: 15 - Words: 36,993 - Reviews: 13 - Favs: 14 - Follows: 19 - Updated: 11/7/2022 - Published: 10/16/2021 - Yui H., Ui H., Azusa N., OC