[Aoi Hitori] Shiawase Ni Naru Tame Ni | Attaining Happiness (Comic Toutetsu 2015-02 Vol. 3) [English] [EHCOVE]

He didn't want revenge. He wanted a family, but couldn't trust his wife. So when he is away, he makes sure that his son, the other member of the family, can chain her to the family.

Instead he should have use that drug on his ex-wife via his son that would be nice revenge to her.

Those who are quick to judge the dad have never been cheated on not by a girlfriend, but by a wife. You can easily lose your sanity. He is just damaged and is trying his hardest to secure a happy household. I feel sorry for him because he has been reduced to this state. Only someone who can see through his damaged heart can help him heal.

should translate to "In Order to Attain Happiness", more accurately

Well I love how every other comes talk about how detailed or sick the father is, but have you ever been cheated on? Kinda makes you hate people and it makes you not want to open your heart or trust someone ever again. Its sad that he and his son don't see any other way to trust her other than to make her an addict to the drug she can only get from them i guess.

This is actually quite sad

He starts off as being a pretty normal guy but as the hentai goes on the guy evolve into a sick bastard.

Never happy story huh from aoi hitori

Yes. I thought the husband wanted to prevent her from feeling lonely at first, but he seems to think women can't be trusted now. Even though his wife really loves him.

This is pretty tragic actually

A deranged father/son duo. Pretty interesting twist at the end.