Identify RPGM(?) game where you have to find your sister

[TheGodUncle]

In the game you play as a female mc and you have to find/rescue your hero sister. The first enemies in the game are slime girls and you also have to go through a tower where the heroes/heroic order lived but they were attacked. I think it was made by western devs. I think it was an rpgm game with good English. It had multiple bad endings for losing against the monsters.

 

[TheGodUncle]

One of the enemies was a succubus that your sister lost against. I think there was a doll you fought in a house near the capital city in the game. If I remember correctly there were also plant monsters.