If you played earlier versions, the "e" patch and the final updates added crucial quality-of-life features:

For the uninitiated, Succubus Affection is a story-driven, choice-based visual novel with light RPG and relationship management elements. The premise is deceptively simple: You play as a mortal who inadvertently binds their soul to a powerful succubus named Lillithia. However, instead of the typical predatory demon archetype, Lillithia is conflicted—caught between her nature (feeding on life force) and an unexpected, growing affection for the protagonist.

The game explores themes of coercion versus consent, personal redemption, and the gray areas of supernatural romance. Previous versions (1.0 through 108) were criticized for abrupt endings, logic bugs, and broken affection paths. Version 109e claims to solve all of that.

Unlike earlier alpha/beta versions that ended on cliffhangers or lacked key character routes, 109e represents a content-complete state of the main story. This means:

If you’ve played older versions (e.g., 0.8, 0.9x), 109e is the version where you can finally experience the intended conclusion.