I truly hope some challenge befall the MC. It seems like he's the heir to the estate and if that's the case his life is not his own but to the family. Oh I hope some drama comes along in the future.
Wtf? The main character got close to his loved one, made her drop the facade of not knowing him, and discovered the secret of why they can't be together only in 4 chapters? That's unheard of! Go Kyuuta!