College student Narumi is tutored by Matsumoto while also dating him. Considering that Narumi is still a student, Matsumoto only performs oral sex on her. As a result, although Narumi has an innocent heart, her fellatio technique is quite impressive. One day, Matsumoto receives extortion-like behavior from his local senior, Nakata. Matsumoto had borrowed money from Nakata and was pressured to repay it. Thus, Matsumoto is forced to hand over Narumi as collateral…
