[What an absolute embarrassment indeed. But Souji just seems amused by the whole thing, as if absolutely impervious to secondhand embarrassment. Thus his not-very-subtle attempt to cover up a laugh once Souma returns, and the giggling which continues even as he reaches out to take the glass and exchange burdens.]

Thank you. Ah, and the muting candies were just candies I found lying around here. They made my voice go away for a while when I ate them.

[Calmly sipping on water as if admitting that he just ate strange candy lying around is completely normal.]