Day One

• Is this deja vu?
• Clean garden
• Keep looking
• Noble’s clothes?

Day Two

• The one in the Sal Forest
• With just this info...
• See Migiwa
• About Nami's clothes
• Run to Oni Stones

Day Three

• Wait and see
• About Natsu nee-san?
• Save Migiwa

Day Four

• If that’s the case
• Fight
• …
• Go back
• Attack first

Day Five

• Migiwa and Natsu-nee?
• Wait
• Ask someone
• Stay calm
• Jump in

Migiwa's happy ending.
It shouldn't be a problem to reach here if you pick choices that increase your friendship with her.
The only thing to watch out for is to make sure you perform CPR on Day Three.
Else, at the very end, you will reach a bad ending.
In order to reach the CPR scene, you need to escape from the attacking mouryou towards the Stepping Stones.