Ahh... I want more of that mansion part that Butler is really possessive he can have the mansion but you can't forcefully own the person that's a crime....but I like stories like that..
Have you read this one yet? http://www.mangago.zone/read-manga/ouji_no_hakoniwa/
Ahh... I want more of that mansion part that Butler is really possessive he can have the mansion but you can't forcefully own the person that's a crime....but I like stories like that..