Those wolf ears are not just for decoration, Ichiro has incredible hearing - mumbling about him from the other side of the room? He can hear you. Whispering some rumour about him down the other end of the hall? Yep, he probably heard that. That thing you're doing in your dorm at 2am when you think no one else will hear? Guess who heard.
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For this reason, Ichiro knows a l o t of the drama and gossip. He hears all.