The characters are brought to life using the E-mote animation system.
When they breathe, wink, or speak, it all looks very realistic.
Additionally, the game features Japanese voice acting.

I met a insane student president on the very first day I come to a new school!
The president, who made lots of school laws, is a leader of this school──Kyogoku Yurina.
I thought she is a tyrant, but she actually is respected by the students...?
I was forced to joining the student council once she liked me for some reason.
As I am at Yurina's mercy working hard every day, I come to know her secrets──

More details on the official game page of Devil Girl ...