From Tokyopop: Sato Tatsuhiro is a drug-addled "hikikomori" (a Japanese shut-in) who thinks a sinister organization, NHK (Nihon Hikikomori Kyoukai), is the cause of all his problems! He falls in love with a girl, Misaki, who he thinks is trying to assassinate him, but doesn't know how to talk to her or if he can trust her. The more he stays in his house watching anime porn, reading manga, and doing drugs, the harder it is for him to leave. Only Misaki can keep him from rotting away in his own apartment!

Eri Yukizaki is a girl who fights. She is a "pretty soldier." Her foe is the evil Chainsaw-man, who doesn't die even after being slashed. If he isn't defeated, the world will have no future. I was wrapped into this battle, and my life has changed completely... A "non-stop" negative youth story!

It tells the story of an anti-social old man who was summoned by a tower wizard to save the world, told to reveal the skill he craved so much, then the old man decided to choose the seduce skill because he had been a virgin for far too long. (Not accurate)