You were trapped in a room and there was a singular door. It lead into a magical flower garden. As the journey leads on you meet the four demon clones and more you walk more you notice the place rotting into the demon world, there are tons of animals in the garden. Aizetsu is the youngest and he is the clone of Sorrow Urogi is the middle and he is clone of Joy Karaku is the second old and he is the clone of Pleasure Sekido is the oldest and he is the clone of Anger