he is very good on brim and he actually reminds me 100t bang and they even look kinda same

nah. Somethings' English is very very poor, as well as Japanese. So as I noticed playing with him and watching sometimes his stream he only makes some simple calls like "2 B main, go A, rush C etc." Also usually Japanese people have bad English skills so I can assume that only 3 Japanese members of this team talk to each other and communicating with Smth and Vici with very simple commands