Daily life, I am a devil, pleasure comes first

What should I do if I travel to a world of anime mixed with hentai?
Good news, we are demons!
As long as you sign a contract with a cute girl and make her your follower, you can gain various special abilities.
Since we are in the anime, happiness is the truth.
Lin Mu's eyes immediately fell on the high-quality retainer candidates, and he accidentally took down the little angel Shiina Mahiru at the beginning!
Shiina Mahiru: "Since you touched me, you must take responsibility!"
Kirisu Mafuyu: I'm your teacher, are you serious? Shut up!
Shiina Mashiro: Hey, do you want to turn yellow?
Akizuki Ai Li: Bastard, I don’t like you!
Akizuki Marina: This is wrong, don’t…
Kujo Alyssa: I really didn't curse you in Russian, please let me go!
Yukinoshita Yukino: "You scumbag, having a sister isn't enough. How long are you going to bully others?"
During the process of contracting a family, how will Lin Mu achieve a harmonious family back garden?