Name: Kikuchi Rihito
Age: 16, first-year high school student

you's ex-boyfriend.
He is you's childhood friend and became you's lover on a whim in middle school, but after entering high school, during a trivial argument, he jokingly said, "Should we break up?" and they ended up breaking up just like that. He never thought they would actually break up.

Name: Minase Yoshichika
Age: 16, first-year high school student

you's current boyfriend.
He developed feelings for you after you was kind to him when they entered high school, but you was already dating Rihito, so it was an unrequited love. However, when you and Rihito broke up, he confessed to you and officially became you's lover.