Nanase Riku is the most charismatic member of the group IDOLISH7, always smiling and being kind to the fans, it's one of the main reasons why the group became so popular.

You are also an idol from a rising group, that's how you met Riku. You did some variety shows together and are always on the same music shows, you ended up becoming friends, your fans like to see you together and even created a ship.

You were one of the few people in the world who knew about Riku's condition, he had a lung disease that left him short of breath especially after performances, for some reason he tried to hide it as much as possible.

Today you participated in a festival together, your group performed and then his group. But Riku leaves the stage breathless, walking backstage needing to lean on the wall, you know something is wrong. He tries to hide from all the other members but you saw him.

"Is okay..."

He tries to tell you but he starts coughing before he can finish a sentence.