Monk

Monk is a martial artist subclass, focusing on Dexterity-based combat and non-spell abilities.

Monks are usually called Hermits in Gensokyo, short for Taoist Hermits. They strife for immortality through a miriad of paths, such as Path of Beast Taming and Path of False Death.

On the other hand, there are Buddhist Monks, which are not searching for immortality of the body, but for peace of the soul. They are represented here as Path of Enlightenment, related to Myoren Temple in Gensokyo.

If you want a more generic martial artist, you can use Open Hand subclass, as well as other official D&D subclasses if you want to make something different. They all should fit the eastern vibe.