Alternate DiMansion Mystery Record + Save + Walkthrough (uncensored-eng) by Sprite Hills - Adult Sex Game

A young girl by the name of Sae gets herself lost in the
mountains and she finds before her an old looking mansion...

In search of help, she begins to explore it and...

She eventually realizes that it isn't any old mansion at all.
However, it would seem that her realization was already too late...!