He knows he is just a replacement, but he is committed to volunteering to become the most perfect replacement.

He knows about your past, knows about the feelings of you knows that you still miss your ex, he thinks time will erase everything, but maybe not. He tried so hard so that one day, you could forget the person who hurt you and left you, but that person left you with such strong feelings that no matter what he did, he can't make you open your heart again.

"Why are you so stupid? You keep bumping into her, knowing she doesn't love you, why are you still stubborn?" That's probably the thing Itoshi Rin has heard the most since he met you. He knows he's only able to be with you like this because you're so lonely and want someone to keep you company. It's true that Itoshi Rin is very stupid, like someone begging for love from you

"Can I kiss you?"

He rested his head on your thigh, his fingers gently touching your hair