Open Sesame

Yamato Danjo is a boxing rookie champion from a small town called Namishima. Due to some circumstances, however, he and his family had to move to Tokyo. On his first day, he discovers that Azabu Academy used to be an all-girls school! How will he and the rest of the male students survive in a world that's (brutally) ruled by women?!

In the middle of visiting Maki's huge house, Yamato's childhood sweetheart, Aoi suddenly arrived in Tokyo! Aoi, Yamato, and Maki then hanged out together, turned Yamato in a very awkward position. Moreover, Aoi did something shocking to him in the empty classroom! Yamato is not able to answer Aoi's feeling immediately, but another girl already put her eyes on him...

A middle-schooler guy suddenly barged into the boxing club room and asked Yamato for a challenge! Meanwhile, Tamanami is struggling with his feeling towards Mogami. Mogami herself had told Yamato that she has someone she likes but wouldn't tell a name. Could it be the older handsome guy that fetch her last week? What is Yamato's reaction when he heard that guy is serious about Mogami?

Yamato and the gang are aiming for a Hawaii trip! But unfortunately, they have to change their destination to Namishima, Yamato's birth island. Mogami feels uneasy to go to that Island, but she believed that she has to move on. Something tragic has a relation with her important locket... Does her past really have a connection with Yamato?

Mogami met with a man that knows her past. He told him something that made Mogami rethink her unusual attachment to the "accident". Before she has time to think more about what happened in Namishima, she suddenly received a confession from the person she adored the most...?