Her behavior changes based on your LP score; higher points make her act more "adorable" or "aegyo" (cute).
Recent reports on Steam Discussions suggest certain kiss scenes may be broken in current versions. Essential Specs
It is a brief experience, roughly 25 minutes long, and is strictly a clean dating sim with no adult content or nudity.
Use LP to ask her to dance or perform cute gestures. She may eventually initiate a kiss.
It features Korean voice acting with support for multiple subtitle languages.