FETC
Fate/Embrace The Chaos (FETC) is a Chinese unofficial doujin game belonging to fate_(series). 

The official net links of producer group of FETC are shown below: 

https://weibo.com/u/7261119445
https://b23.tv/NdBvHER

The official game pv is below: 
https://b23.tv/sBzyBlM
fate/embrace the chaos