[The quest is pretty straight forward and simple, if a little menial. Find rats. Kill rats. Don't get bitten by rats. Easy. And even if he does get bitten, he's fairly certain that whatever plague they might be carrying won't be passed onto him, and that his body will take care of whatever it is quick enough. Honestly, he doesn't really need a partner for this, but the shop keep insisted on having someone to watch his back, even with Orthrus standing by his side, absolutely ready to consume ratsnacks.

And Akechi is here too. Lured by the prospect of free food for life, maybe? It's a good deal, and it's what Kazuya cares most about. It's a nice change of pace besides. Gives him something menial to do, and actually work his mind instead of sitting inside most of the time cooking or baking or whatever. It's enrichment, or something.]

You're a detective, right? You should be able to find traces of them better than I can. [He says, leaning over to check behind some wayward garbage bags, just in case.] Want a tetrakarn in case they try to bite you? You might die if you're not careful, apparently.