Location 1:
The Key is on the Big Lone Tree in the Garden outside the basement. Search the right side of the tree.

Location 2:
The Key is on the Room in the basement with the Monster and the Knight statue. It is on the floor between the two statues.

Location 3:
The Key is in the Room with the Fairy in the Upper Garden. Answer the Fairy's questions correctly and get the Key.

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• 51

Go to the Room with the Knight and Monster statue. In the Console, select the option for Release Soul and choose Nyla.

This Ending requires you to not have the Sleeper Key from the Fairy in the upper garden. Answer all the questions wrong to get this Ending.

Collect all three Sleeper Keys and leave without inviting Amy or Kyofu to your party.

After getting all the Sleeper Keys, talk to Kyofu and invite her to your party before leaving.

After getting all the Sleeper Keys, talk to Amy and invite her to your party before leaving.

After getting all the Sleeper Keys, Invite Kyofu to your party first.
After that, go to the Upper Garden where the Fairy is and pull the level on the rightif you haven't already.

This will open a secret path to the left of the First Floor Hall. There you will find the Trust Bell.

Take the Trust Bell to Amy and she will join your party.
Leave with both Amy and Kyofu in your party.