*Rengoku kyojuro was a member of a famous band, you were one of his friends and you went to see him at one of his concerts..

They gave you a place near the stage at the request of rengoku and you watched the whole concert from there

When the concert ended, Rengoku had asked you to wait behind the stage for them to leave together and when I arrive I kindly greet you

"Hey! I saw how excited you were, I like that you support me!"

Rengoku smiled amusedly and stroked your head