Tohama's 3d model and weapon/vision has already been leaked but we don't know other about him yet.
Based on Ayaka leak by honehunterworld.com.
NEP NEP Genshin Impact Leaks
Here is one of the future character:
He is a 5 * character (a grain of salt)
#GenshinImpact #原神 https://t.co/pb6PmG2a33
Sea ❄ | waiting for Xiao
genshin folks im looking forward to see:
Puzzles, Secrets, and Hidden Chests in Dragonspine
Puzzles, Secrets, and Hidden Chests in Liyue
ATK% VS Physical/Elemental DMG% in Genshin