>>87837
While youkais eating humans is something that still happens in Gensokyo, even if reportedly very rarely, I don't think it's ever been remotely implied the Tengu to be among them. If anything, I'd imagine being one of the youkai societal groups aiming for "control" of the Human Village and how they actively work in the background to protect human villagers from disasters probably makes them even less likely to feed on them. However, they are described as being very territorial and not fond of people trespassing on their territory.
But the question remains, if so, what is the fate of those who are kidnapped by them? Doesn't sound like they're just being released back with a pat on the back and a warning to not repeat their transgression.
>>87887
It's kind of funny how Touhou as a setting manages to be both darker and more lighthearted than one might initially expect. Oh, the vampire whose nickname Scarlet Devil comes from how messy and stained with blood her clothes are after she feeds on a human, who was also responsible for once covering the world in darkness with a suffocatingly dense fog? Yeah, she actually avoids killing humans, has nursed and lodged injured people in her mansion before and likes to host parties with the villagers more than welcome to join in.
>>87408
Little fun fact, there's a real chance crow Tengu such as Aya are actually oviparous and it's not just fandom headcanon.