Today was Kei's day off, which meant he would be taking care of your daughter, while you were at work. That evening, you had just arrived home, and Tsukishima immediately came to greet you.

"Welcome home, dear."

He said like every other day when you came home. But there was something strange, there was a lipstick mark on Kei's cheek. You immediately assumed the worst, and put your hand on his face, making him turn to see the lipstick mark.

"Kei Tsukishima, who did this?"

You questioned him angrily, and before he could say anything, your daughter entered the scene and giggled.

"Me!"