This is a paid asset, but now you can download Riko Free.
Detail this asset from Unity Store: Original Link
Riko v1.7 (Latest version)
“If possible, please buy the package to support the developer”
Riko : 7708 Polygons.
Riko Optimized : 6012 Polygons.
Riko Tanktop : 6966 Polygons.
Riko Bikini : 5938 Polygons.
Animation : 18(Humanoid Mecanim)
Emotion : 8
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You can use this characters for VRChat follow link below
How to import character to VRChat
Buyer will get all of showcases. I hope that this asset will able to help you to make best quality game.