The protagonist, Keisuke Shinozaki, returns alone to his grandparents' house to stay for summer break. There, he is greeted by his mother's (much) younger sister, Yuuka. Ever since he was little, the protagonist had always adored his kind, smart, and beautiful aunt. However, it was quite the shock to learn that she was now engaged...

The day after being fired from the horrible company he had been working at for many years, Shoichi Harama arrives on a remote southern island located hundreds of kilometers from the city. Though he has no regrets about losing his job, he was still worried about his future. That is, until “Sensei,” the old man responsible for him being fired in the first place, gives him an offer―to help him manage an island.

Average joe Seiji encounters another magical-girl wonderkid—this time in the form of the mysterious Maja at his neighborhood park! Intrigued by her aloof charm and possible hidden motive, he tries to say something, when a Majin appears out of nowhere to reveal Maja’s true identity—