At the live performance, Akira is moved by the presence of Daiki, who looks like the main character of Akira's favorite hero anime, "Crossfire." Revved up, Akira and his group get inspired for their lessons, but the dance lessons particularly seem hopeless. Later, it's decided that the three of them will get to participate in a commercial shoot as LEGIT's backup dancers. Although there's not much time before filming begins, LEGIT gives them one-on-one dance lessons. Akira, who fretfully practices yet makes little progress, begins feeling impatient and makes a proposal to Banri and Chihiro.

As PROTOSTAR, Akira, Banri, and Chihiro successfully completed their live debut. But for some reason, Chihiro seems conflicted. In actuality, Chihiro is the eldest son of a famous Japanese dance master. Chihiro, unable to get into the swing of practice, is severly troubled that he cannot tell his father he is an idol nor can he tell his friends the situation. Worried about Chihiro who keeps skipping lessons, Akira and Banri visit Chihiro's house──?!

With Chihiro's problem solved and their bond deepened, PROTOSTAR arrives in Hawaii together with LEGIT, JAXX/JAXX, and their leaders, Lin and Maoto. Actually, it was for a magazine photo shoot featuring the idols affiliated with sMiLea Production. Still, Akira, who was overseas for the first time, led the way putting everyone in high spirits. Each of them had a good time eating and sightseeing during the shoot. But on the flight home, they suddenly realized Banri was missing...!

Confusion hits everyone at sMiLea Production when an article in a weekly magazine states that the person who forced Lin to retire from being an idol was Daiki. The group's lead still has yet to be decided, and there are rumors that the joint live performance will be canceled. But while everyone gets increasingly anxious, only Akira continues to believe in Daiki. Akira does his best to support LEGIT's work and make the joint live performance a reality with persistence and a positive attitude. One day, Akira runs into Daiki at the same school he attends for supplementary lessons...!