For some unknown reason, which is apparently connected to something called the "World Ninja Record," high school freshman Yaezaka Tatsuko is being targeted by ninjas. Moreover, all of these ninjas are representative "Iga" from various countries. Thanks to her childhood friend, Japan's Iga, Tatsuko is an expert in defeating ninjas, however, she might not be able to overcome the craftiness of America's Iga.

A text message would be sent out to people whose lives were in danger, guiding them to safety. This mysterious system called itself the "Police Inspector". One day, three youngsters—who had been saved by the Police Inspector in the past—receive another text. This time, it is the Police Inspector who needs help. Now, Natsumi, Shogo, and Teru work for the mysterious texter, who gives them clues as they track down a criminal. But who or what is this mysterious texter... and can they really trust it?

A 30-year-old Japanese NEET joins a private military contractor in the Middle East and becomes the handler of some soldiers.

From Aerandria Scans:

Noriko is caught up in an accident while she is going to her track and field competition. When she opens her eyes, there is the young doctor Shinoda who seems very concerned about her. She is attracted to his child-like smile, but from his lips, she learns a shocking truth - in the accident, Noriko has lost her physical body and what remains is only a brain, stuck in a little black box?!

Note: The side stories in volume 1, 2 & 3 are written in novel format.