Ninja Vs. Gokudo 6

The offshoot yakuza gang called the Glass Children force hostages into a deadly escape room game. The ninja chief undergoes a dramatic transformation to use unprecedented magical girl powers against the demented young assassins. Mass murder causes crowds to run around with their heads literally cut off. Bound by their newfound friendship, Kiwami and Shinoha desperately hope to find each other safe. However, the Glass Children are anything but fragile—especially when their leader Gamute holds a filial grudge. The rat race begins. See how they run.

Volume 6 of the Ninja Vs. Gokudo manga series by Shinsuke Kondo.