-Trying to gaslight/manipulate the hell out of Michelle about their marriage because Michelle is confused and hesitating about it since Ain disguised himself as a servant.
-He had been feeding Michelle sedatives for the ENTIRE month they had been staying at Sherleg Mansion.
-He made his servants report everything about Michelle's activities. In short "stalker'.
-When he was planning to visit Michelle, he told his head maid to increase the dosage of the sedatives since Michelle might have developed a tolerance.
-Noncon Michelle while he was sleeping. Touched him and gave him bj.
He is actually manipulative even towards his own sister. Personally, he gives some sociopath vibes.

Ain/Ian in the novel is such a huge red flag