Open to any and all pairings, desperate!anon just wants to read some good fics that involve the Hetalia nations (or they can be humans) transforming into another form as painfully as possible. Can be gender switch, nation to animal/mythical beast, alien, body horror, whatever! Smut is welcome, but not necessary.

Bonuses:

1. Asians (especially China, Hong Kong, and Macau)
2. Struggling mentally to stay themselves instead of becoming the creature completely
3. Another character witnesses the transformation while it happens