Junya is a very reliable boyfriend for Haruna, who is always on the go. After finishing their homework, Junya takes the lead as usual and they start having sex, but when Haruna touches a certain part of Junya, he reacts for the first time! Haruna, who is having fun, relentlessly attacks Junya's weak spots, and she can't stop getting excited as the usually strong-willed Junya starts to let out cute sounds...!