Takemichi Hanagaki is ambushed one night in a dark alley by people filled with hatred toward him and his... When he regains consciousness, he finds himself in an unfamiliar white room, clearly a hospital. At first glance, he appears perfectly fine, but two shocking revelations are about to turn his entire life upside down. The first: "Where... Where am I? How did I end up here? And... Who am I?" Takemichi can't recall a single thing about himself-not his name, his past, or anything he's ever experienced. His entire life is a blank slate. The second revelation comes from the doctor: "Don't worry, young man. Both of you are safe now. We also delivered your babies safely, so there's nothing to worry about." "Babies? Delivered? You mean... gave birth? Wait... me? But... I'm a man!" Now suffering from amnesia, Takemichi finds himself living a peaceful life in another country, raising his children without any knowledge of his past. Unbeknownst to him, his sudden disappearance-or rather, his presumed "death"-has left a profound impact on those he left behind.