Triage X manga volume 11 features story and art by Shouji Sato.

Mikoto - that is, "Miko Honma" - knew that going undercover at Misumi Private High School would carry some risks, but her support role quickly puts her on the front line of an all-out battle with Syringe! With the revelation that the school's shining star, Reika, is pulling the strings at Syringe, the pieces begin to fall into place - and the complete picture looks dire for Black Label!