Only a single save with no save states, can't rewind past choices, and many other design decisions designed to hide the fact that there are very limited scenes and they're trying to pad play time to prevent refunding.
The fact that this is a v-tuber tie in with a built in cast for at least some H-voice acting and that there's none there makes is even more disappointing.
Not worth $14. This is an ad that you pay for the privilege of seeing.