Book 7

Daisuke is happy to tell just about anyone what his plan is - he's going to be the Creature Girl Harem King, and win over as many monster girls as he can. His old buddy Oritsue, however, is the source of a great deal of uncertainty in their new world. The Kingdom of Osama is terrified of Oritsue's scientific know-how, and now that he's joined up with a tribe of goblins and awakened his inner predator, they worry he could become a bona fide Demon Lord. Meanwhile, Daisuke and company are wrangling with a rare monster, the Living Armor, which is far more sinister than it might at first appear!

Book 8

THE HAREM KING IN THE LAND OF CENTAURS

Daisuke Kurimusubi wants to be the Creature Girl Harem King, and the next candidate to join his coterie of demi-human beauties is a centaur maiden. But winning her over requires winning over her tribe! Despite the centaurs' deeply unorthodox approach to sexuality and gender roles, Daisuke's managed to establish a position for himself in the centaur village and win a little bit of their respect. The looming problem, however, is the horde of minotaurs plaguing the nearby grasslands. Before Daisuke can find the right way to deal with them, conflict suddenly breaks out! It's a battle between the minotaurs and a band of trolls and orcs!

Book 9

Whether they’re part cat, part horse, or part spider, Daisuke has always been fascinated with the uniquely exotic beauty of monster girls. When he finds himself whisked away to a fantastic world full of all manner of demihuman life, he swiftly gets to work meeting (and analysing!) as many as he can. There’s really only one logical thing for this stranded scientist to do: he’s going to become the creature girl harem king!!

Book 10

GETTING HEADLESS

Daisuke is living large as the Creature Girl Harem King. After helping Yura get her revenge on the manticore that ripped off her head, he's added the Dullahan woman to his ever-growing group of wives. There's certainly something strange and special about a woman who can remove her head anytime she likes, and Daisuke's inner scientist can't wait for a hands-on examination! Meanwhile, Oritsue is staring down an incredibly intelligent dragon, one whose uncanny wit is matched only by its nation-destroying strength. It'll take every piece of tenacity and warrior prowess Oritsue has to survive the encounter!

Book 11

A MERMAID PRINCESS AND HER MAIDS

As the Creature Girl Harem King, Daisuke is always looking for new monster girls for both his scientific and erotic explorations. His latest tryst is with mermaid princess Kana's fish-tailed maids, who are only too happy to get their hands (and fins) on an otherworlder like him. Daisuke's continuously using his modern scientific knowledge to create new contraptions, this time creating vehicles never-before-seen in the world he now calls home, and the local ladies love him all the more for it. Meanwhile, as winter settles over the Death Mountains, Daisuke's old friend Oritsue prepares to negotiate an alliance with several nearby demihuman species...

Book 12

A BLOODY REUNION IN ANOTHER WORLD!

Not long after Daisuke and Oritsue were transported to an entirely different world, their fellow university student Fuechi wound up there too. Fuechi happens to be an expert in the Oritsue family style of martial arts, and he's found a comfortable place for himself teaching the fine points of combat to Repuburiku's elite forces. Their soldiers have been tasked with taming the wild places of the Death Mountains--bringing them into inevitable conflict with Oritsue himself, who rules over the Mountains as the master of the Midori goblin tribe. Human forces grapple for supremacy against the newly-formed Demon Lord's Army!