This seems like a pretty interesting manga. Character design is pretty nice looking, plus I'm weak for glasses characters so MC is pretty great for me. I'm excited to see where this will go. :)
Senpai is actually a pretty nice ML. He's a bit of a wimp, but not so much that it makes him pathetic. You see him overcome his wimpy tendencies so that he can help other people, like how he worked up the courage to treat Nagatoro to some food to make her happy. I like the ML.
I wish they would just divorce already so that I can see Navier and Heinley get together. Can we all agree that Heinley is a refreshing ML? he's very sweet and somewhat gentle, and I don't see him as a very possessive person.