Igai na Basho Kara no Dasshutsu (意外な場所からの脱出, Escape From the Unexpected Place) is a escape room-style Flash game that's developed by Yomino Kagura. What's unexpected about this place is that the first door you say may not be exactly be the door you're looking for. By finding clues and solving a series of puzzles. maybe the door you're looking for may show up.
Rxser has been expecting this room in this run and escapes it through the real exit in record time.