Shinobi Legions

A ninjitsu master trains three children: two brothers, Kazuma and Sho, and his own daughter Aya. As they grow up, the oldest boy, Kazuma, becomes obsessed with power and demands to learn the sacred techniques of absolute power. The master refuses, and Kazuma leaves, vowing revenge.

Many years later, long after the master's death, Kazuma returns with an army. He plots his revenge by kidnapping Aya and thus luring Sho into his hideout. As Sho, you must defeat Kazuma and rescue Aya.