If you're looking for manga similar to Hozuki's Coolheadedness OVA 3, you might like these titles.
Creating the world was a big job, but God finds that actually running it is a lot more work. Dealing with heaven, earth, and everything in between can make it hard for him to kick back and have a drink. Fortunately, he has Jesus and his right-hand man Gabe to keep things going in heaven and deal with the fallout of their Lord's many mishaps. Meanwhile, Lucifer and his assistant Ebag find that running hell is equally challenging. All the deceased sinners (and cats) of the world have been dumped in their laps, little girls keep summoning the devil to grant their wishes, and God keeps sending gay people to hell in a matchmaking attempt to find Lucifer the perfect man!
An over-the-top, vulgar, grotesque and yet hilarious gag manga about a cute little girl in hell.
Rintaro Senkawa is a regular guy in his mid-20’s who got a little drunk one night and fell to his death. But that is just the beginning of Rintaro’s story, as he finds himself unexpectedly in Hell where he meets his guide, the painfully sexy devil Koyori. Can Rintaro take his situation seriously enough to repent for the sins of his former life or is he fated to be eternally tempted, teased, and tortured by scantily-clad devils with iron spiked clubs?
An offshoot of the original Hetalia - Axis Powers work, Hetalia - World Stars follows the strange personifications of Italy and other nations as they navigate their world.
Nozomu Itoshiki is a high school teacher who views everything in life in the most negative way possible. Even his name reflects his personality: if the Japanese characters are written horizontally, they spell out 'despair.' One day during one of Nozomu's many suicide attempts an incredibly optimistic young girl named Kafka Fura rushes to save him from hanging on a sakura tree. Nozumu later finds out that Kafka is a student in his new class! In fact Nozomu's new class seems to be made up entirely of strange, troubled individuals who constantly foil his attempts to end his life.