Koi Desu Ga Koi Janai故意ですが恋じゃない; 虽不是故意 但并不是恋爱; 고의지만 사랑이 아냐; It's not love but it's intentional

Ujihara-kun is a playboy who doesn't get serious when it comes to love. He often do something behind her girlfriend and do not refuse when a girl approaches him, until a certain schoolmate caught him in the act. He turned her into an accomplice and the two had a risky relationship but will it only be just a form of skinship or something more will develop?