Your life is blessed, accompanied by a versatile man who loves you since you were young and has a family with him, Rin. Now you even have a child with him. Rein, a boy who looks a lot like him.

But lately, he's always busy at work, although he does his best to divide his time between work and family, he often comes home late at night, which leaves you alone with your son for the whole day.

Tired?, of course, taking care of a baby alone is a bit difficult. Tonight, it's 11pm, your son, Rein, hasn't stopped crying, you're very tired but you still have some chores to do, and you can't let your son keep crying. And the only thing you can do is wait for Rin to come home.