[CKCK-014] I Became Friends with the Shut-In Girl Next Door, Ruka Itoi (Censored)

"Female students" seem like a special existence. They don't just go to school and study or participate in club activities. They're not children, but they're not adults either. They're somewhere in between, in mind and body. We normal adults don't mingle with them in our social lives, and we certainly don't mingle with them in the physical sense. They're a kind of deified existence, a taboo...