してなさそうで、している彼女のしていない事～キミの初めてになってやる～

"If you like me that much, that makes me happy. Are you sure you like me?"

Rikuto Hikuma has successfully started a relationship with Nanami Nishigasaki. But he discovers that Nanami has had sex in the past.

It not being her first time is quite a shock to Rikuto, who did not think that she was not a virgin. After all, you would think that someone focused on their craft would not be interested in romance or any other kind of activity.