-Hitogatana-

Afterschool War Activities or -Hitogatana- is a manga written and illustrated by Onigunsou.

Plot
Crimes committed using manned combat-androids dubbed "Katana" run rampant.

In an effort to maintain order, the government has organized the AKCD - "Anti Katana Crime Division."

Togusa of the 8th squad of the AKCD, while holding existential doubts as a Human-Katana hybrid, continually casts himself into battle...

Other Sources
MyAnimeList