Also, a lot of dolls are first released in the Chinese server before anywhere else or even they're exclusive to the Chinese, so you might want to play in that server to get all the dolls. *hugs his Saiga's portrait*
'cuz the game is Chinese, but its audience tends to either be Japanese or massive weebs.
surprisingly not the first chinese "Weeabo" game. Langrisser mobile is the same. the Devs were fans of the original game but the series has been dead for years. So they got permission to ressurect the series with a mobile game. It has japanese dialogue from the start even on the chinese servers.
Also, a lot of dolls are first released in the Chinese server before anywhere else or even they're exclusive to the Chinese, so you might want to play in that server to get all the dolls. *hugs his Saiga's portrait*
As of now there aren't any Chinese server exclusive girls actually, all of them were eventually added to other servers at a later date, like any other server exclusive girls. Until they decided to add more exclusive girls, CN, TW and KR servers are on sync in terms of progress, EN and JP servers are newer so they still need some time to catch up.
My guess is that he pulled a screenshot from google rather than using his own device.
Alternatively Pronak answered your question by saying the artist might be Japanese but plays the Chinese version to get those sweet, sweet primo early release dolls.