Houtarou is in class when he hears raised voices coming from another classroom, recognizing one of them as Erus. Later on in the clubroom when everyone talks about how Eru never gets angry, Houtarou recalls her outburst during class and accidentally triggers her curiosity, as she wonders why the teacher would have mistaken another class for hers.
hyouka-ep-6Hyouka Season 1 Episode 6
Hyouka Season 1 Episode 6
To Commit a Grave Sin
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