In this school, "semen duty" means having to be the cum receptacle for all the boys in the class.
But this time, the teacher joins in too.
Life is tough for young girls recently!

Note: This is a manga adaption of a side story of the scenario "Grade 5 Semen Duty" from Sakuranbo Elementary School's visual novel "Rokan12 : How They Feel on the Inside". Misaki Sogo returns!