「お願い！一日だけ泊めてくれないかな？」下校中、クラスメイトのS級1軍女子に呼び止められたボク。よっぽど困ってたのでしょう、普段は全く接点がなく、話した事もない女子がボクにお願いするだから…。仕方なく、絶対静かにするという約束で一晩だけ泊めてあげる事にしたボク。父や母にバレそうになる度に、布団の中にかくまったり、一緒にお風呂に入るハメになったりと、エロハプニングの連続！！「一宿一飯の恩ってやつだよ」と彼女の方もスイッチが入ってしまい…

"Please! Could you let me stay the night for just one day?" I was stopped on my way home from school by a top-tier, elite girl from my class. She must have been in a real bind, since I usually have no contact with her and have never even spoken to her, so I couldn't help but ask her for a favor… Reluctantly, I agreed to let her stay the night on the condition that she would be absolutely quiet. Every time her parents tried to find out, I had to hide her under the covers, or we ended up taking a bath together—a series of erotic mishaps!! "You know, a night's lodging and a meal is a favor," she said, and her own switch was flipped…