* Here are the codes for the final door * 

- 524 (You had to combine the crossed-out numbers on the wall)

- ABB47 (It was the code from the third card)

- 28 (a reference to May 28, which is the day the Golden Anime Week convention takes place).

* The third ending can be a bit complicated to achieve, so here's the solution. *

1 - Do not throw stones at Henrietta. Go to the right room and draw on the damp spot on the wall.

2 -In the room with the shovel and the hidden stranger, go to the dark room on the very right.  There you will find a crumpled piece of paper that must not be torn under any circumstances.  (Click on "Do nothing").

3 - When you talk to Henrietta blocking the door, do not aggress her.  Click on "Do nothing" until she talks to you again.