Biggest thing to note is the screenshots are a lie, the English is utter garbage.
Second thing to note, it's essentially a reverse auto battler. Instead of playing the main character, you play as some ancient demon resurrected as a snake trying to corrupt the main character. You place enemies on the map and have a stun skill to try to prevent the main character from escaping. Game and corruption progresses when you stop her, you instantly game over when you don't.
That's about it, not quite my style of game play, that coupled with the horrible translations is why I'm dropping from a 3, otherwise thematically it's fine.