No.Gomesu

A demon exterminator that was sent there to the school by the secret organization known as "Ark, her crest reacted to the main character as someone compatible to become a fusion type fighter, one things leads to another and they battle an enemy, This is a one shot that never became a series.

Walkure Romanze More\&More Specials drawn by the main Mangakas of Walkure Romanze.

After he and his entire class died on a field trip, Odamori accepts a job offer from a mysterious man to be reincarnated. However, his new job turns out to be that of a Slavemancer, with the power to dominate the minds of others and turn them into his toys. Soon, however his evil actions lead to a Princess Knight (who turns out to be one of his previous, more popular classmates) being dispatched to apprehend him. But Odamori, of course, has something different planned for their reunion...!

In the Middle Ages, jousting was a duel between knights who put their prides on the line in an effort to take down their opponent in one sweeping blow. Even with the changing of time, jousting is still being done. In one country it has gone from "duel" to "sport" and everyone, girls as well, is encouraged to become knights and take up the sport. One girl, Celia, is no exception. It was through jousting that she met her first love, a jousting student named Takahiro in her youth. However, before she could talk with him, tragedy struck in the form of a jousting accident and he returned to his country before she could approach him. Years pass and Celia has become a strong young woman. Attending Winford Academy, she studies the art of jousting as well as how to become a knight. It is a new school year and she sees Takahiro among the new students. Will she be able to approach Takahiro this time? Will she become a knight? Only time will tell as the story unfolds. This is based off a visual novel by the same people, Ricotta, who made "Princess Lover!" and is drawn by NO. Gomesu, the same mangaka who did that one-shot, "Boy + Girl Fusion".