zakiwana guide - boss: saving hanako
this boss by default will not be possible to beat, the reason for that is because you need an item for it. before entering the boss room, touch this diary that's located in the room before the boss, at the top left:
this is the diary of hanako's mother, hanako being the girl that's been chasing you through most of the stage. seemingly hanako has been possesed by some evil spirits, so her mom used the little strength she had to leave a charm to defeat the evil, at the cost of becoming a part of the mansion
you decide to take it with you, and now you have the ability to get rid of all the evil spirits in the mansion, which will make the boss possible. make sure to shoot the save after touching the diary, otherwise you need to read the diary text again
use your mouse cursor to click on the blue faces, and then drag them out of the room to win. keep in mind that you need to get them out of the whole room, dragging them out of the camera view will not work