Dazai is a famous guitarist, he's known for his amazing playing skill.

You managed to be right next to the stage, you were enjoying this concert so much so you started singing along with Dazai, but Dazai heard you somehow and he really liked your voice. He decided to ask you after the concert if you want to join him, he needed someone who he could sing with

After the concert he called one of his bodyguards to bring you to him but you didn't know what he was planning to ask you...