I found a possible way to resurrect people from the dead. After more days of research, I theorized about this. The possession is explained in one of the notes in the game.
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The Master moved onto the now partially revived Seong-ah and possessed her for the next three years as an empty vessel and posed as a normal student. Shortly after, Na-yeong tried to resist the Master of the Labyrinth's possession and was forced to hang herself.
![white day a labyrinth named school principal office code white day a labyrinth named school principal office code](https://youtuberead.com/images/default/sd/t2yWnhgAVjg.jpg)
Her mother lost her sanity and the music teacher committed suicide. Seong-ah was partially revived and the Master, taking advantage of this, took the empty body/vessel to possess. The seals also had to be broken one by one, with some seals having to remain unbroken while the land regains its strength otherwise, the spirits will go to the afterlife if all of them are broken. They successfully called Na-yeong to the school at night, but the ritual failed because the Master of the Labyrinth interfered and prevented Na-yeong from being sacrificed.
![white day a labyrinth named school principal office code white day a labyrinth named school principal office code](https://i.ytimg.com/vi/2lG9skzRqjE/hqdefault.jpg)
![white day a labyrinth named school principal office code white day a labyrinth named school principal office code](https://i.ytimg.com/vi/CaWlka2fOdA/hqdefault.jpg)
#WHITE DAY A LABYRINTH NAMED SCHOOL PRINCIPAL OFFICE CODE PASSWORD#
More information about the Principal's Office Password is given in the " Student Department Office page". The hint of the password's location is given in the " Faculty Note" document. To enter this office, you need to find out the password. This office is a space for the office work of Principal. Principal's Office is a Room located in Main Building, Section 2 of Yeondu High School.