On investigation originally there seem to be both languages. It is not translation by the user.
Base +7
Posted on 24 September 2013, 20:03 by: lightshader
Score +91
If the convention tag is FF**, then it's Chinese release and therefore not a translation.
Although originally done by a Chinese, some Chinese artists will re-release their works at Comiket after getting their works translated into Japanese (which in those cases they will be tagged as Comiket release). Or it'll be the other way around, a Comiket release then Chinese release. That's why this doujin has Chinese dialogue, but uses Japanese SFX.
Base +25, somewhen +18, 白虎剋夫 +9, Miles Edgeworth +39