Renako starts high school determined to leave her introverted self behind and miraculously lands in the top-tier popular group. But keeping up the extrovert act is exhausting. Just as she’s about to break, the school’s princess, Mai Ouzuka, confesses to her!? This isn’t the high school life she imagined!

The showdown between Renako and Mai has begun: best friend or girlfriend? Mai visits Renako as a “friend,” and they have a blast. Friendship is the best! But Mai’s feelings keep growing. Hoping to prove friendship wins, Renako plans a fun weekend outing. Everything's going great… until a sudden downpour flips everything on its head!?

Renako tries to forget the kiss, while Mai leaves for work in Paris. Renako walks home with Ajisai after school, holding hands and making plans to hang out later, too. Mai calls her a cheater, but they're not even dating, so how can she be?! But then when Ajisai comes over, Mai shows up too, bringing her little sister Haruna. Now it’s a chaotic four-person hangout... What could possibly go wrong?

Mai skips school, and Renako starts to worry... Maybe she really went too far. But then Satsuki calls her in to reveal the truth. Turns out, a heartbroken Mai told her something crazy... She's planning to join a Suitors Party?! How did it come to this?! Renako rushes to the hotel venue, where she and Mai face off… in swimsuits. Now’s the time. Renako has to finally tell Mai how she really feels!

Satsuki suddenly drops a bomb: “Let’s be girlfriends.” It’s clearly revenge for Mai's careless treatment of her. Still, Renako agrees to play along for two weeks if it helps the two make up. But why does Ajisai seem bothered? No way… right? Meanwhile, Mai’s as calm as ever. Things are shifting with Satsuki, but is it really headed in the right direction?

Satsuki suddenly starts acting all couple-y in front of Mai, much to Renako's confusion. After seeing an unexpected side of Satsuki, Renako dares to admit she's actually an introvert, only to find out Satsuki already knew. Shocked, Renako runs off, but Satsuki finds her, and somehow she ends up spending the night at Satsuki’s place. Are they really taking a bath together too!? Wait, why!?