Art of the Echo Arc Edit

Spoiler Warning! Plot and/or ending details follow.
Takaomi encounters Yui right after the latter decides not to post a photo of bancho Mafuyu on the bulletin board. They share a quick greeting, and Takaomi notes that Yui's presence had disappeared for a second. Miyabi then spots Takaomi, and asks if there was anything interesting on the board. Takaomi checks it, but doesn't see anything unusual.

Later, Yui rejoins the Public Morals Club, and Takaomi tells him that he always had a suspicion of who the threatener was.