So long as you have made the following choices throughout the entire game, you will unlock the Human ending:
Chapter 1:
- Get angry.
- Say thank you.
- Answer.
- Tell him that you want to see it yourself.
- Grab him by his clothes and stare closer.
- Watch him boldly.
- Look at him.
Chapter 2:
- Say that you weren't afraid.
- Continue to sulk.
- Make an excuse.
- Try to remember.
- What a helpless little brother.
Chapter 3:
- He's making trouble.
- He's teasing me.
- Why get a job guarding the city?
- Tell him to give it up.
Chapter 4:
- Move his hand away.
- It's wrong.
- Ronan.
- You're silly.
Chapter 5:
- Remind yourself of the bread.
- I want to tickle him.
- Ask him if he would like to meet her.
- Get closer.