Get the normal ending. To get the normal ending, you must be at 0, 1, or 2 points at the end of the game. Good thing +1, bad thing -1 and you start at 0.
1. Give ribbon to Kubi in chapter 1.
2. Give photo to Minikui in chapter 2.
3. End chapter by talking to Umbi in chapter 3.
1. Give pendant to Kubi in chapter 1.
2. Burn Minikui in chapter 2.
3. Give rum to Shojo before talking to Umbi second time.
I gave ribbon to Kubi, photo to Minikui, and then gave rum to Shojo before talking to Umbi second time to end with 1 point but other variations will also work.
Full video walkthrough: