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...
I'll try not to hide it so much from now on.
سأحاول عدم إخفائها كثيراً من الآن فصاعداً
Ich werd mir Mühe geben,
mich nicht mehr abzuwenden.
Intentaré no agachar la cabeza.
Intentaré no ocultarme.
Cercherò di non nascondermi più.
Tentarei não esconder tanto
a partir de agora.
Постараюсь больше не скрывать смех.