Girl meets boy. Girl adamantly studies boy’s facial expressions, daily habits, schedule, physical traits, and preferences. When girl finally confesses to boy… boy says yes! As Momotsuki (aka Momo-kun) gets used to his new relationship with his slightly older (and more-than-slightly aggressive) new girlfriend Kurihara, will he be able to handle being the adorable object of Kurihara’s nearly obsessive affection?
Momo-kun receives a love confession from a girl one year older than him. Little does he know how long she’s liked him or what their new relationship has in store for them.
The new couple enjoys a first date. Later, Kurihara suggests a group study session to slyly infiltrate Momo’s house, but is Momo getting a little jealous of his friends?
Momo worries he’s not acting “mature enough.” Meanwhile, Kurihara schemes to take her first couple’s photo with him, but who’s that other girl who seems cute-struck by Momo?
After Momo sees Kurihara hanging out alone with Rio, is he feeling a little jealous? Little does Momo know Kurihara’s real reasons for reaching out to his classmate.
Momotsuki and Kurihara get invited to a BBQ trip. With the prospect of seeing Momo in swimming trunks, Kurihara tries to find a perfect swimsuit.
As Momo and Kurihara go to the festival, Momo deals with feelings of inadequacy when Kurihara seems to be taking the lead. When Momo decides to step up, they get separated.
With a fever leaving Momo bedridden, Kurihara has to take care of Momo while facing off other temptations.
As they travel back from the pool, Kurihara ends up taking the lead once more. Momo in response tries to be more assertive, leaving Kurihara’s emotions in a storm.
People are starting to question Kurihara’s… strange actions. Meanwhile, Momo takes Kurihara on a date to the amusement park!
Rio and Momo participate in the musical festival’s costume contest. As Rio and Momo get closer, Momo wonders why isn't Kurihara getting jealous?
After Kurihara’s weird confession, Momo-kun carries on as usual. When Kurihara makes a bento, Momo realizes it has all his favorite food except… he never told her.
As the holidays approach, Momo-kun and his friends get together to study for final exams with Kurihara trying her best to support him.
Kurihara and Momo end up going to a hot spring with their friends. Their relationship is tested when they experience some miscommunication.