If you're looking for manga similar to Oho Manga, you might like these titles.
When Kanako accidentally applies to work at an assassination agency, the timid office worker discovers that she has a knack for bumping people off. Will she ever earn the respect of Sakurai, her prickly and kinda hot co-worker–and why is she still having silly workplace problems when she’s employed with hitmen?! This full-color manga is dangerously funny!
Despite the many romantic dramas surrounding Tomoya, Nagisa and the others, the gang still know how to enjoy their youth. While Kyou attempts to employ Tomoya as a kissing partner, Fuko is causing mayhem with her new starfish shaped bread. With Botan showing off his array of “skills” and Kotomi’s habit of launching books at any insect in the vicinity, every day is full of mayhem for Tomoya and his friends.
A girl and her mechanical guardian are living in a world where both humankind and nature has been abandoned. Even if the world around them is dark, there will be light if the both of them are together. This is the tale of a heart filled cyber punk manga.