Complete guide for mea culpa.
Effects Guide
Cat
Appearance: Isaiah gains cat's ears and a tail.
Passive Effect: None.
Action: None.
Location: Found on the Maneki-neko Path.
Practical Uses: None.
Enter the top-right door. Go down and then right. Find a hole at the end of a patch of land and enter it. Go right again and interact with the bell on the ground.
Happiness
Appearance: None.
Passive Effect: None.
Action: Selecting and equipping it will activate an event.
Location: Found in one of the Hotel Rooms.
Practical Uses: Used for an event.
Enter the bottom-right door. Go down and right, following the path as it goes up and splits off. At the split, go left and up. Go right at the next fork in the path then go up and enter the door. Interact with the mask on the bed.
Nun
Appearance: Isaiah dresses as a nun.
Passive Effect: None.
Action: None.
Location: Found in the Church.
Practical Uses: None.
Enter the top-left door. Go south-east and enter the church. Go left to the next room. Interact with the poster next to the bookshelf above the bed.
Events
Using Happiness
When the Happiness effect is used/equipped, some dialogue will appear before the player is sent back to the title screen.