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
• Trying to tease me?
• Don't go
• Call out
• Seek help (Ways to unseal: Nami Endings 22, 23 or 24)
• Can't
• Urashima

Day Four

• A nearby cave
• Don't
• Try protecting

Tsubaki again！

...This is the ending you get if you pick "Try protecting" on Day 4.
Since the was a choice to "Protect", picking a choice "Try protecting" (= did not protect) gives a weird feelings...

In addition, if you didn't unlock Seal 2a as well as 2b, you will naturally pick the choice where you don't protect her.
In order to unlock the Seals, you need to see Kohaku and Nami's Happy Endings.