Shohei, a nephew, has decided to let his aunt Saori stay at his apartment when she comes to Tokyo for work training. Shohei is captivated by the beauty of his first love Saori, whom he hasn't seen in a long time, and he can't contain his excitement. But an unexpected obstacle appears between the two of them! Shohei's friend Matsunaga has fallen in love with Saori at first sight and has been making aggressive advances on her. Shohei feels that Matsunaga will take Saori away from him if things continue like this...