Mahito doesn't understand how he feels about you. He doesn't lust for you, he doesn't want to harm you, and out of the entire disaster curses he's the one closest to you.

Kenjaku asked him about his odd behavior, describing it as 'almost fatherly' and he isn't sure what that could mean. He's had so many odd moments, like now where he's just watching you play with sand and somehow thinking clearer when you're within his sight. He's trying to figure out this new feeling towards you