Lunch duty today of all days with 〜に限って

Grammar Explanation: Of all times to happen with 〜に限って

Komura and Mie have serving duty in the cafeteria. Normally this wouldn’t be an issue, except today Mie accidentally stepped on her glasses and broke them, and can barely see without them.

木村(こむら):: 「そしてそんな日(ひ)に限(かぎ)って給食(きゅうしょく)当番(とうばん)」; “Thus, on a day such as that (of all days), she has lunch duty.”; 「だから今日(きょう)も俺(おれ)が三重(みえ)さんをサポートしようと思(おも)っただけど…」; “Therefore, I thought I'd support Mie, but...”
男(おとこ)の子(こ):: 「まま待(ま)って待(ま)って待(ま)って」; “W-w-wait, wait, wait!”