The Story of a Detective's Butt -From Behind! F-From Behind!-

"My name is Kasasagi. Yeah, I'm just another humble detective. I'm hard boiled, and I don't have a single weak point! Or so I thought... until during one particular investigation, my ass got in trouble... Or should I say my "asshole"...? But who cares about that? The point is, my ass is really itching for some action! The only way to fix this... is to put an adult toy in there... Nggh! Hey! Stop! You're just my assistant, you're not allowed to touch my ass! Heeeey! Not... there.. Wh-what the hellllll?!'" A very fresh take on hard-boiled action!