Caligula

"Destroy ideals (you) and return to reality (hell)..." A beautiful song echoes throughout the city. A city is overseen by the popular virtual idol group "μ", every day was filled with peace and serenity. Ritsu Shikishima is a freshman at Miyabi city Kishimai High School. With good grades and athletic skills, he was spending a fulfilling high school life surrounded by many of his friends. Time has passed and on the first day of his second year, the one who stepped up to the podium as the class representative was someone who was not supposed to be there...

(Source: Crunchyroll)