is a Japanese manga series written by Yū Sasuga and illustrated by Kenichi Tachibana. It is serialized in Shueisha's magazine Weekly Young Jump since 2011. Viz Media has licensed it for an English-language version in 2013. Two anime adaptions are planned to be released: a television series, covering the Annex 1 arc, and an original video animation (OVA), abridging the Bugs 2 arc. Also, a spin-off manga titled Terra For Police starts on May 10 in Jump Kai.