In all routes, any number "n" indicates picking the choice n from the top, and X indicates that the choice does not matter and anything can be selected.
Full walkthrough
X
[SAVE 1]
2
[SAVE 2]
2X52 🏆Neutral route
[LOAD 2]
1X
[SAVE 3]
1 🏆Yangh Ending
[LOAD 3]
3 🏆Yangh True Ending
[LOAD 1]
1XX 🏆Yihua Ending