Souma is really susceptible to cracking up, and even memories will put him into laughing fits. But being self-conscious about this, he always tries to hide it. When he does this again at a clothing store his friend works at, the friend asks him why he does that, especially when it's so easy to tell anyway. Later, Shun also repeats the same sentiment...
Don't expect me to say that side of you is 
what gave me courage at my last match!
لن أقول أبداً بأنّ هذا الجانب منك هو
!ما مدّني بالشّجاعة في مُباراتي الأخيرة
Abgesehen davon hast du mir beim Spiel damit
Mut gemacht, aber das bleibt mein Geheimnis!
No te diré que tus risitas me dieron
valor durante el partido, ¿oíste?
No pienso decirte que tu risa me dio
valor durante el partido, ¿vale?
Tu me feras pas dire que c’est
ce qui m’a remotivé pendant le match.
Mi ha dato coraggio
durante la partita, ma io non te l'ho detto.
Eu nunca disse que foi esse seu lado
que me deu coragem no último jogo!
Ни за что не скажу, что в последнем матче
воспрянул духом из-за этой твоей черты!