Pretty sure we are gonna see Yuugi save the day! (And Kyouko!)

Despite how elegantly they dress on the outside, most residents of Gensokyo wear T-shirts or proper outside-world underwear beneath.

"We're missing an echo doggy and if we don't come back with her, her owner will kill us....all of us."

Visible fang for Yuugi. That's cute.

Wonder where Kyouko got swept off to, I don't think it was ever specified where the Underworld river leads.

My guess is that it goes down to the nuclear furnace where it gets heated up and geysered to the surface for the hot springs. So she's probably about to run into Orin and Okuu.