I just found this series by chance and I fall in love with it.
I love how the main character just your ordinary old man but he had to take drastic measures since his enemy is a crime syndicate.
Serv*nt = probably from Fate/series
Taim*nin = there's no need explaining. I bet any men of culture knew it. ( ͡o ͜ʖ ͡o)
Kanc*lle = I'm not into this one, but I knew it...
It was like when I was play Tree of Savior and trying to clear a hidden quest to unlock some hidden class. The thing is, I barely had any clue to what should I do.
Well...I don't mind if Haru ended up become a harem protagonist. I mean, he's actually a pretty amazing guy.
But, surely, his dedication and devotion only for Karen. Karen is the winner here, no doubt about it.