From hacamchicac:

"Senior's body and mind will be remodelled..."
Girly favourite window side candidate Damery man · Sakurada and Yayoi of a super-high-spec junior student who can not be jealous. Yayoi, who has a strong desire to Sakurada, ties his body, sings and develops. In the transformation play that heats up Sakurada of nonke begins to gradually feel pleasure!?

In addition to the title work, it also includes the spin-off too much of the ultimate de M owner and sales clerk of Yandere Saiko!!