Viability: Game is playable from beginning to end. It would have been fun to see the other routes though. If you are having trouble with finishing them maybe you could have some purposeful dead ends so you are not overloading yourself.
Theme: Theming is good and fits with colors and characters well.
Engagement: Descriptions are very beautiful. They do get a bit wordy from time to time though. Also the blocks of texts are a bit hard to read sometimes so maybe break up the text in more passages?
Presentation: Rules are understandable and clear.