Koichi question about childhood friends dug up old memories from Kaname; from when Koichi was a volunteer teacher at Kaname's kindergarten and his first love rival.
You've got to introduce yourself at a mixer.
Vamos preséntense ya que 
es una reunión mixta.
Vamos preséntate ya que 
es una reunión mixta.
Você tem que se apresentar
num encontro às cegas.