Porn Game: Island of Penance v1.02 by Kagura Games

Dr. Brian, the genius scientist behind the rediscovery of Crest Magic, died in an accident under mysterious circumstances. Years later, Illumina, the man's only daughter, pursues the career of prison guard in order to gain access to Prison Island and investigate her father's death. Only those with magic affinity get to become guards though, and only men so far have displayed this quirk... But by some miracle, and to everyone's surprise, Illumina is compatible, allowing her to become the first female prison guard in the whole nation!

And yet, as the only woman on an island full of men, things will only get more difficult for Illumina from here on out. The wardens rule with abandon and impunity, and their word is law... Will she be able to solve the mystery behind her father's death? And what will it cost her?

Island of Penance v1.02 by Kagura Games game preview

online.