Manga by author Anzai Nobuyuki - Status completed

From VIZ: Becoming a ninja is just a childhood dream for sixteen-year-old Recca, until a fateful encounter reveals he has inherited ninja powers, including the ability to wield fire! As Recca learns to master the ancient ways of his ancestors, he is drawn to protect a mysterious girl named Yanagi...

Ginta Toramizu is a 14-year-old kid who doesn't have a lot going for him: he's near-sighted, doesn't do well in school, sucks at sports, and to top it off--he's short! But Ginta is a dreamer and has had the same dream 102 times, always in the same fantasy world, where he is a hero blessed with all the abilities he lacks in real life. Then one day a supernatural figure appears at Ginta's school and summons him to a mysterious and exciting new world! In this strange universe filled with magic and wonder, he is strong, tough, agile--and he can see without his glasses! Thus, Ginta begins a mystical quest in search of the magical items known as "RMS," one of which may have the power to send him home. Joining him on this epic journey are his companion Jack and the valuable living, talking, mustachioed iron-ball weapon known as "Babbo," which everyone wants but, it seems, only Ginta can possess!

Matsuri Ichimatsu, Haruno Koume, and Sanguubashi Takezou are old friends with one thing in common: despite their good looks, they're incredibly unpopular with the ladies. But what does Polaris have to do with their fate? And will they ever get that harem they've always wanted?