This is the cutest relationship with age gap that I've read.
Haruto's personality is so funny and I liked how his personality works with Izumi's. I'm in love with how Izumi treats Haruto because he really look like a guy who's in love and want to treasure him.
Jin's and Momo's relationship is also pretty cute, but they need to work on some things.
I really loved all the people in the complex and I'm happy they are living together and all, it was really funny, and it can totally see the characters development
Heart no Kakurega