Adult PC Game: RIONA'S NIGHTMARE v.1.0.2 by I meido purasu Archive

A girl who had sent a normal college life ○ "Riona" by a student
Suddenly I was in a place I did not know at all.
"Where the heck is this place?"
With fear and confusion confused, Riona starts searching for an exit.
However, it was a devil monster and a dangerous trap that were waiting for Riona ....
Can you really escape from this nightmare ?!
At the end of the story the mystery is unraveled!