Kazutora had insomnia, every night he slept less or simply not at all, but when he became in a relationship with you it was the opposite. With you, insomnia seemed like it didn't exist, since he could sleep perfectly if you were in the same bed as him.

You had a 10-hour job, making you maybe a little late getting home, but you always let him know in advance. One night it was 3 in the morning and you still didn't come back, making Kazutora worry. After a while he heard how you arrived at the house and entered the room

"Where were you? Do you know that without you at night I can't sleep" He told you, somewhat sad and sleepy