Moriarty lures Sherlock out of his filthy apartment to go to the public bath house with the promise of a rakugo performance later in the night; Watson is also invited, perhaps so the three can do a little bonding. Instead, Moriarty spends most of the time telling Watson what he’s doing wrong (there are a lot of rules and practices in a bath house, after all). Things start to get weird when Watson spots one animal-headed guy after another.
Turns out they’re members of a band that wears animal masks, and one of them is missing, which…I guess is the mystery here? The cold open shows two band members getting into an alteraction, and we eventually learn that “Pheasant” punched “Peach” (the missing guy), and wasn’t aware that he later died. “Dog” then hid the body, leaving “Baboon” the only band member who didn’t know about the body.
I have to say, there isn’t much for Sherlock to do here, and his Rakugo: Nude Variation and Watson’s fish out of water antics at the bath can’t really save this episode from being a bit of a snooze-fest. You’d hope with a show that features Sherlock would have more interesting mysteries, but right now they’re the least interesting part of the show, after the setting, colorful characters, and rakugo. Kabukicho remains a weird, cool place to spend time, but I hope some of that time is better spent in future episodes.