This walktrough help you to get happy end.
How to get happy end
First at all you need to say two ghost 2 words
Piro room : TRUTH
After that go in Attic and say to other ghost another word
Attic room : HEAVEN
After that get key in one room and read note in other room , and go to bathroom and take the sphere from angel
After you have fight with the boss in library,read a note and take a knife.