(No AI was used in writing, for better or worse) I give this 9/10. I think it's deserved because the manga delivers on what it's advertising. If you're looking for an unapologetic gorefest full of fanservice, you would be hard pressed to find a better alternative. I started reading this because I wanted to see more art from Tokiya Seigo after reading Mahou Shoujo Tokushusen Asuka, which I enjoyed. This one is also written by the same guy, Fukami Makoto. His writing style works really well for these sex fueled gore fests. Definitely recommend reading this, whether you enjoy excessive violence/sex ironically or unironically. Mahou Shoujo TokushusenAsuka is often talked about as 'edgy', but it comes nowhere near Succubus & Hitman. My expectations for a meaningful story were even lower this time. It reads a lot like a video game story. It's so heavy on the action scenes, it feels more like a series of rapid-fire character vignettes.

When I said that Fukami Makoto's writing style works well for this kind of manga, I basically mean that he's able to make you care about characters in a short amount of pages. He gives you just enough to root for someone, to hate someone or to feel conflicted about someone. All the things that make the fight scenes feel more fun.

One of the things that really stands out to me is how much the artist seems to be enjoying his work. There's a great amount of details, and lots of evidence of much research being done into the subjects he depicts. Martial arts is not something that I know much about, and I learned a lot from this manga. Out of curiosity I always looked things up online to see if what's being shown in the manga is actually true, and it is. (There is a LOT of martial arts history and crime group trivia)

Rather quickly, the story took a turn that I did not expect. I thought there would be more of a buildup between the two main characters and the plot involving them, but we quickly encounter two supporting duos who round out the cast of main characters. There's such a great variety of aesthetics going on. Military groups, Yakuza groups, professional fighters, religious cults, undercover detectives, etc..

As much as I enjoyed all the different characters, my main complaint would be that the story largely neglects the character development between the titular main characters. Even by the end of volume 12, not much has really transpired between them. Their dynamic is cute, but basically doesn't change after it's established in volume 1.

Another thing I didn't like is that shocking scenes are used so often, they lose their impact. In Berserk, a particularly shocking event transpires that traumatizes and subsequently haunts the main character. As much as that story contains numerous gruesome events, that one event in particular stays up as the "most horrible thing that ever happened".

Succubus & Hitman follows a similar story template at first, but instead of replaying the core trauma, it keeps adding more to it by introducing increasingly more shocking events. Somewhere down the middle of the story there really wasn't any way to make things worse anymore, even while the main cast enjoys considerable plot armor at the same time.

That said, I thought the overall direction of the story was pretty clever, conveniently excusing several volumes worth of everyone wearing bathing suits and everyone fighting in situations where their power levels could be altered. So somewhere down the middle of the available volumes, the quantity of fighting and lewd scenes almost doubles.

There is a LOT of sex and nudity in this manga, featuring a wide variety of fetishes and body types. Notably, I think basically all the female characters are lesbians or bisexual. There are also some male/gay characters, though there is no depiction of any acts between them, it's just implied that they are into men. My overall feeling is that the artist went all out to make this the most raunchy manga imaginable. Characters have sex because .... sex is super cool and interesting, I guess? The sexual scenes are loosely relevant to the plot, just enough so that you can't really argue otherwise.