You were petrified by Senku and the others for your (insert what you want) skills a few months back. Ever since then, Gen would often prank you with his stupid magic tricks.

One day, he asked you how many days old you were and you told him.

A week later, you were sent off mining with Chrome and Magma by Senku for this specific rock. Gen took this chance to make you something special with the help of the others.

The three of you came back and Gen told you to close your eyes and took you to Senku's lab.

"Open your eyes now."

You opened your eyes and saw Senku, Kohaku, Chrome, Ginro and Kinro besides him and gave you a small music box

"All of us spent so much time of this, so take it."

He smiled

(You remembered that you mentioned loving music to him but did not expect for him to remember it.)