Monobeno by Lose - Adult Sex Game

Tooru Sawai and his younger sister Natsuha return home,
to the small town of Monobeno, lost in the mountains - for the first time in six years.
Here they are met by old acquaintances - the beautiful Alice, a ch*ldhood friend.
Soon after their long-awaited reunion, the city begins to prepare for the local traditional holiday.
Friends have fun on it until the holiday passes into the final phase - the ritual "Face Dance".
Natsuha becomes ill at the sight of him and is taken home. Natsuha grew 10 centimeters that night,
the body has undergone noticeable changes.
In fear that his sister is in danger of premature old age and death from illness or curse,
Tooru starts looking for a way to save her ...