When his heat arrives ahead of its time, Geto locks himself in his dormitory room. He does not have any suppressants ready at hand, and neither can he drag himself to the school infirmary for fear of attracting other Alphas nearby. In his distress, he can only think of asking for help. Unfortunately, Yaga-sensei and Ieiri Shoko are not available at the moment, and he definitely does not wish to be seen in such a state by his best friend, the Alpha Gojo Satoru. While he struggles to find a way out of this predicament, someone appears in his room out of the blue. "...Huh? Where am I?" It is none other than Gojo Satoru himself in the flesh - except that it is a grown-up version of Geto's best friend from ten years in the future. For an Omega in heat to be stuck in the same room with an Alpha, the consequence of this encounter is already clear for all to see. However, as if the inexplicable emergence of his best friend from the future is not yet troublesome enough, two other people suddenly barge into his room soon afterward: The 17-year-old Gojo Satoru of the present. And another version of himself, the Geto Suguru from ten years later.