They have lived in the orphanage all their life ever since they were kids. Playing with paper planes, sunoo carrying a teddy bear, They haven't faced the world outside. They are trapped in the orphanage and kept under surveillance by the 'caretaker'. Their teeth are checked and eyes too if they have already possessed 'red eyes' and 'white fangs'. Red eyes and white fangs are the representation of ‘vampire’. they take pills every night and morning. or they get sent to the dungeon and changed up