Lamune and Da Cider head off to Puff-Puff Palace to rescue two beautiful barely clothed maidens, Gold Mountain and Silver Mountain- the Mountain Duo. This of course infuriates Milk and Leska, who with a rather confused and unwilling Cocoa "transform" into "Seinaru Milky", "Seinaru Cacao", and "Seinaru Lemon". The three then head after their would-be boyfriends to extract their revenge.

In a fantasy world where "jobs" are god-given from birth, heroes are born, not made—and Ein's job of "Appraiser" has put him about as far from the "hero" pedestal as possible. Used, abused, and eventually abandoned by his fellow adventurers, Ein decides it just isn't worth going on. Lucky for Ein, though, the end may just be the beginning, as well as a new lease on life. Turns out, his "worthless" job may just be the key to becoming a hero after all.

Lamune has returned to Earth with no memory of his adventures on Hara-Hara world and Doki-Doki space. The remains of Gobuhriki find their way to Earth, and awaken the spirit of Don Harumage. While Cocoa builds a fighting vehicle with stuff she finds around Tokyo, Milk and Leska set off to find Lamune and Da Cider to save the day before the new Gobuhriki is revived and destroys the Earth.

Hao Ren was originally a young man who lived in a fourth-tier city and lived on the meager rent of an old house. When he went out to work, he accidentally became a "universe police officer." While he was still struggling to accommodate a group of abnormal creature tenants arranged by his superiors, his jurisdiction, the Dream Plane Universe, had already brewed a cosmic crisis. The mystery of the origin of abnormal creatures on Earth and the ruins of civilization in the Dream Plane Universe seem to be connected in some way. As Hao Ren's investigation deepened, the eldest son's world-destroying natural disaster, the goddess of creation fell, and one after another of the dusty and terrifying cases that had been buried for thousands of years bombarded his already useless brain circuit. Hao Ren gradually realized that he might not be able to slack off...