This is a fan remake - Incest Story (eng) & Incest Story 2 (eng) on the Renpay engine.
How to play
Normal RenPy commands apply: hold CTRL to skip text. After the first line of the game, it would be possible to skip a lot.
On maps,
red / green squares are interactable objects (items, items that can be picked up, exits ...).
the blue square represents the player Probably.
you can use the mousewheel to zoom in and go to Google map style.
Man will be able to get it wrong. Certain games might show events as "(possibly unreachable)" - click on those at your own risk.
Chug a bit drawing each large map for the first time. Maps will be cached on disk after being rendered the first time.