A desperate college student, Kinoshita Kazuya, meets an elegant surrogate girlfriend, Mizuhara Chizuru, and ends up introducing her as his girlfriend to his family and friends. Time passes with Kazuya unable to talk about reality, as he is surrounded by the diabolical ex-girlfriend Nanami Mami, who keeps coming back to tempt him for some reason, and the hyper-aggressive temporary girlfriend Sarashina Ruka, who doesn't know how to accept him. . looking for an answer, and the super introverted yet adaptable and hardworking teen bride Sakurasawa Sumi...beautiful brides of all types! The pub, the beach, the hot springs, Christmas and New Years... Having gone through these challenging events, Kazuya's emotions for Chizuru become stronger and stronger. But she exposes a shocking truth that threatens to derail their "interaction"!