Characters (Indivisible)

Cite the example of an article with stim in Chinese:
https://steamcommunity.com/sharedfiles/filedetails/?id=1886290856

Me not found was just as this article only Sangmu and Antoine
Honestly have no idea where to look for them, as it passed all, in every corner I looked over... only the final fight with Kala and left... what Can anyone write here on these characters.