The cultures of Asia have many myths and traditions about various monsters and other creatures. If you're looking to bring some of them to your RPG table, you'll want to check out Asian Monsters, a new RPG supplement that's up on Kickstarter now.
From the campaign:
Asian Monsters is a 112-page softcover 5E bestiary featuring over 90 incredible creatures drawn from the myths and legends of Asia. Researched and developed with a diverse team of authors, artists, and cultural consultants, you'll find an awesome array of enemies and allies from Cambodia, China, India, Japan, Korea, Laos, Malaysia, Myanmar, Thailand, Tibet, and Vietnam, as well as nations of the western Pacific like Indonesia, Australia, and the Philippines, beautifully illustrated and ready to unleash in your DnD 5E campaign.
The campaign's more than 18x funded with 21 days left to go.