Nanami Haruka, who was known as the composer of STARISH and Quartet Night, and STARISH's best friend, gets fired by the very group, STARISH. However, she has another side to her that no one knew besides her childhood friends who she goes back to. Wirh Quartet Night missing Haruka and having a feud with STARISH, what will happen? Who'll win? Haruka centered!

When STARISH ditched Haruka and hired a new composer. Haruka's heart was filled with darkness and was broken, she hated Emma and STARISH. Emma changed the band name into "Shooting Star". Haruka quit the SHINNING agency and goes to her Mother's agency. Her mother is a famous Idol before and now owns a agency like Shining Saotome. Haruka Nanami was just a fake, Haruka revealed her true self. Her real name is "Ermine Chrona Mikuji." Her band's name was "Harmonical Knights." While they were on vacation, they spent it in a hotel, and the room next door was Shooting Star's, when Shooting Star saw Chrona, Haruka appeared in their mind. They tried to talk to Chrona, but Chrona ignored them. She hated them for betraying her as their composer. First, Haruka became friends with some members, then all of them became friends. But if.. all of that was a misunderstanding?! And when someome explained, it was already too late!! What will "STARISH" do?!!