You will obtain this by getting an A ranking in all possible stages in one play through. Know that Stages Stage 3, Stage 4, RE: Stage 5, Stage 6 and Stage 7 are all automatic S rankings. The proper choices are as follows:
Stage 1:
- Just see what he will do.
- Force him to explain.
Stage 2:
- Ask him what he knows.
Stage 3:
- No choices.
Stage 4:
- You can pick either option, both will not impact your game.
Stage 5:
- Step on the tile behind him.
- Leave it to Kuon's wish.
RE: Prologue:
- Pick either one, it will not impact the game.
- Start the game again.
RE: Stage One:
- Left to right path.
- Left again.
RE: Stage 2:
- Leave them alone for a while.
- Wish for fries.
- Wish for fries.
- Wish for fries.
- See her response.
- Ask Kuon to do it.
RE: Stage 3:
- Wish for fire extinguishers.
- Go without waiting for his answer.
- Keep track of Kuon before running.
- Wait until he regains consciousness.
RE: Stage 4:
- Try to go across the bridge.
- Try the middle of the bridge.
RE: Stage 5:
- Step on the shining tiles.
- Confident in your step.
- Top right.
Stage 6:
- Pick either choice, neither will impact your game.
- Check it out together.
- This is also for me.
- Make him remember his true wish.
Stage 7:
- Think a little more.
- Wish for a soul.