Akira Kiyose, a high schooler who loves to sing, gets recruited by a talent agency called sMiLea Production. Akira learns that the legendary idols “Anela”, who shocked the world with their sudden retirement, are behind the agency developing talent. Together with Banri Naoe and Chihiro Isuzugawa, also recruited by the agency, they form an idol group as they chase their dream towards super stardom alongside other idol groups “LEGIT” and “JAXX/JAXX”.

A 6-people high school friend group Masaomi, Sho, Runa, Daichi, Hiyori, and Haruto gathered in a luxurious Western-style building after receiving an invitation from the alumni association. They were greeted by a man who seemed to be a butler in the mansion and were pleased to see him again, but no other attendees were found. When they were wondering, a flashy man who seemed to be the owner of the hall appeared, calling himself as a Game Master and told them: "I'm going to ask everyone to play the game. Can I call it "Murder Mystery"? Find out the criminal who killed Inoue Honoka."

Rihito, a dancer who has just returned to Japan, joins forces with his childhood friends Haru, Noah, Eugene, Ray, and Dan to save his best friend, Simon, who has been diagnosed with a brain tumor with only three months to live. Rihito and his five best friends work together to somehow earn money for the surgery to save Simon's life!