Day One

• Is this deja vu?
• Help kitchen
• Other family?
• Rush to the girl

Day Two

• Go see last night’s girl
• Have Yasumi help out
• See last night’s girl
• Stay by the girl
• Can’t help it. Bring her
• Don’t stop her
• Sleep
• Check it out

Day Three

• Wait and see
• One ready
• Don't go
• Call out
• Run
• Now’s our chance

Day Four

• Go to the island
• Hang up the phone
• Ask Nami

Day Five

• Mention Yasuhime-sama
• Stop the ritual
• Run away for now
• Natsu-nee！?
• Get it away from here
• Nami’s body...

During the 3rd choice on the 5th day, if you pick "Run away for now", at the very end, you'll branch off and receive this ending.
If you want a Happy End, you need to pick "Can’t hand her (Nami) over".
However, you need to unlock Seal 1 or you won't be able to pick this choice.
To unlock this seal, you need to go past the opening stages of Kaya's 4th day.