If you're looking for manga similar to Fukumaden, you might like these titles.
Adventures of a guy who has a harem full of magical knights! Will he able to chose the bride that is perfect for him? Let's find out!
Reiji Hakuba has a genetic condition that makes girls go crazy for him. It's called the Ubermale Gene, and whoever has it appears like the hottest guy ever to all the girls he meets. This may sound like a dream come true, but too much of something you love can become a nightmare. And things really get complicated when non-human girls start chasing him around. Specifically, a Cupid Princess from the Divine Realm!
A married hero keeps having monster girls coming after him to steal him away so they can bear children of heroic lineage. The hero's wife chooses to deal with the monster girls herself.
Long ago, the Chosen One defeated the Demon King and brought peace to the world not that it matters to ordinary high school student Hironori Tabata. But word is the Demon King’s coming back, and the only thing that can stop him is what’s in Hironori’s pants. Before long, demi-human girls are throwing themselves at him, hoping to give birth to the next Chosen One, and Hironori has to worry more about saving his chastity for the girl he loves than saving the world.
One day, a boy who loves Insects, "Anri Kajimi," meets "Makiri Oka," an Insect girl (Konchuki) who came from 100 years into the future. Oka, who is a "Konchuki" who has the characteristics of a human being and a insect, presses him into "mating with her" ...
The story of the former hero Loki and his time working at an onsen with his monster co-workers!
Onodera Mamoru is just your average, video-game-loving high school kid… that is, until he’s suddenly transported into a parallel dimension filled with magic and adventure, where monster girls and mayhem await!
Eita Touga, a seemingly normal high school student, is secretly the heir apparent to a distinguished line of ninja. Unfortunately for the Touga Clan, Eita has no interest in taking over the family business. More interested in the virtual reality of video games than real life, Eita has sequestered himself to a life of digital bliss. That is until one fateful day, a mysterious harpy girl kicks in the door to his family dojo and spirits Eita away to a world full of monsters and mythological creatures. Can an unwilling slacker of a ninja like Eita help the denizens of another world stave off an invasion by a technologically-superior empire?
When twenty-something Kurusu Kimihito became an involuntary “volunteer” in the government homestay program for monster girls, his world was turned upside down. A lamia named Miia was sent to live with him, and it's Kimihito's job to make sure the sexy snake girl integrates into everyday life. In this novel spin-off, a new program hopes to give monster girls experience in the working world–leading to sexy uniforms, on-the-job shenanigans, and all-new hilarity!