There are four endings to this game. As I was stuck on a one of them, I thought the best way to find it would be to make a walkthrough! That way I could easily see what choices I had and hadn`t made yet. ^_^ That`s not to say that these are the only ways to get these endings, just that these are the ways that I got them.
Kotoha Ending 1
- Ask about her likes
 - That`s not true
 - Comfort Kotoha
 - Believe in Kotoha
 - Apologize to Kotoha
 - I want you to call me by my name
 - I`d be bored without you
 - You`re right
 - Focus on killing the boss
 - The atmosphere is fantastic
 - Is this why you wanted to be together today?
 
Sara Ending 1
- Ask about her other likes
 - That`s not true
 - Scold Kotoha
 - We can`t have you get injured as well
 - Let her go
 - That isn`t it
 - I don`t mind
 - I refuse to be anyone`s replacement
 - Can you come with me?
 - The moon and sun have aligned
 - I wouldn`t expect you to
 
Sara Ending 2
- Ask about her other likes
 - That`s not true
 - Scold Kotoha
 - We can`t have you getting injured as well
 - Let her go
 - Not even close
 - Why should I do that?
 - I cannot accept your offer
 - Can you come with me?
 - I have no idea
 - Why are you acting like this?
 
Kotoha Ending 2
- Ask about her dislikes
 - That`s right
 - Comfort Kotoha
 - Believe in Kotoha
 - Apologize to Kotoha
 - I don`t mind
 - You don`t have to stay here
 - You don`t understand
 - Yes, you should
 - I can`t believe you cooked for me
 - Polygamy would make for an interesting first relationship
 
