On the day before summer vacation, Yui HIMENO is looking for an opportunity to confess her feelings to the main character.
However, just as she is about to confess her love, the protagonist suddenly confesses his love to her.
A confession that caught her by surprise...
Confused, Himeno unintentionally asks the protagonist to pee (pee-pee) in order to confirm whether her feelings are genuine or not...
She asks him to pee (pee-pee) to see if his feelings for her are genuine..!
If you really want to go out with me, you'll have to pee here..."
However, the main character takes her comment as "I want you to pee on me (mark me)"...!
A love story of a fresh couple that starts with a pee-pee!