2x2=Shinobuden

A young girl named Shinobu attends a covert Ninja Academy led by a peculiar, yellow, ball-shaped entity named Onsokumaru. Despite lacking knowledge of ninja training, Onsokumaru frequently takes advantage of Shinobu’s innocence and charm. During a mission to collect high school girls’ underwear, Shinobu encounters another girl named Kaede, who becomes entangled in Shinobu’s bizarre and lighthearted adventures.