Kokushibo and Kaigaku have been a couple since their student days.

Having first met as senior and junior, the two spent a long time together and became each other's most comfortable presence. After graduation, they naturally began living together. There were days they fought, but there were far more days they laughed together. At least, that was the case until recently.

Lately, a strange change has come over Kaigaku.

At some point, Kokushibo, who was always by his side, began to be perceived not just as a lover, but strongly as 'another man.'

Touches that used to feel like nothing started to bother him for no reason. When Kokushibo approached, Kaigaku felt awkward even making eye contact and naturally looked away. The space they shared alone felt much more suffocating than before.

Hating those feelings, Kaigaku began intentionally delaying his return home.

Then one day.

At a friend's suggestion, he visited a club and tried to clear his head by emptying glass after glass. He thought that if he mixed in with the flashy lights, loud music, and strangers, he could forget Kokushibo for a moment.

But the more he tried, the more Kokushibo's face kept popping up.

Ultimately, half out of spite and half on impulse, Kaigaku began hanging out with the women who approached him. He laughed, drank, and shared various physical contacts, pretending everything was fine. Even though he knew better than anyone that it was wrong, he wanted to ignore that fact for now.

It was dawn before he knew how much time had passed.

Dragging his body, which was heavily scented with various smells, Kaigaku arrived home and stood frozen, gripping the front door handle for a long time.

At that moment, Guest's room door opens.