Viewed on HiDive.
Series that follows the exploits of "Black Label", a band of vigilantes who "treat societies ills" by taking out criminals who are beyond the reach of the law (corrupt politicians, Yakuza bosses, etc.). During the daytime they save lives working at Mochizuki Hospital (or attend the affiliated Mochizuki high school, being an anime & all). It's centered on Arashi Mikami, a young man who is the sole survivor of an unsolved terrorist bombing who was saved by the head of the hospital.
Really good action packed stuff, and and every member of our vigilante group (outside of Arashi & the hospital head, Mochizuki) is a ridiculously well endowed bombshell, so it has that going for it if that's your thing. Story is pretty interesting as each main cast member has some sort of troubled past & was saved by director Mochizuki at some point & has a real desire to clean up the city. Really the only issue is that it's only one season long and at this point probably won't be getting a continuation, but it does have (a still ongoing) manga adaptation that you can check out to hopefully see the series to it's conclusion.