I guess platonic love is a thing and you can definitely platonically love your best friends more than romantically love your crush. but who even is kinjo, she's just a big boobed nice lady but and there's actual chemistry with osanai
To be fair who wouldn't want to hug the adoptive supportive mother that literally almost died for you twice. the boi doesn't know the distinction between familial love and other kinds so it's not quite past the point of no return