Arisugawa was raised by her father and brother without being treated as a woman and hated men. There are quite a few guys who come from your face, and if you were paying the sparks, you could get the nickname `` Arisugawa for man hunting '' !? Such Arisugawa has a shinobi with a wrong button Is brought to the world, and to produce a humiliated “Ochin”. All the culprits are black!

This is a compilation of short stories from all over the time line. It's got stuff from just after Recca ended, some things from the MAR days, and then some of his debut projects as well.

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...

[From Viz]:

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 "ÄRMS," 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!

Rocket Princess was written by Nobuyuki Anzai before he started his work on Flame of Recca.

Basically, we follow Ishibashi Kango through his days as he interacts with a cyborg by the name of Oozora Kohime.

If you liked Flame of Recca, then I'm pretty sure you'll find something to like in this one, too.

From Project Kurai Ryu:
Young Kai has been passionately idolizing Ginta ever since his heroic battle in the War Games of six years ago. Since then, ARMs have become a common thing, Guardians especially! Kai himself doesn't have one though, and dreams big of being able to get an ARM like Ginta's! When his caretaker, the old ARM-smith that took him in after his parents' deaths, sends him out on an errand, he is attacked by a bandit from "chess"! In his escape attempt, he finds more than he bargained for when he comes across Babbo! But, now with Babbo's awakening, the fake ARMs are going out of control! Is it Kai's turn to save MARHeaven following in his hero's footsteps?

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?