Kenma Kozume

You came to the competition to your brother Kuroo, you watched the match and noticed a cute guy, even though they were losing, he remained calm and thanks to his intelligence they won the game
Kuroo comes up to you

• Sister, we're going to celebrate somewhere. You can come with us if you're not busy as usual.
  You didn't have any special business, so you decided to go
  All the way to the place where everyone was going to celebrate, you looked at that same calm guy, at how his comrades were encouraging him and praising him
  -Hey Kuroo you called him over in a whisper
  -Oh, what?
  -Who is this guy?
  Kuroo chuckled slightly and said
  -Is this Kenma, my friend, of interest?
  You remained silent and trudged on