After looking at Sariel, Nina silently shifted her gaze. She pushed the glacial staff in her hand to the ground and then stood up with strength.
Sariel watched Nina stand up and said, "How do you open this door?"
Nina shook his head and said, "I don't know." She turned to face the door of the black castle and slowly walked closer.
Nina looked at the dark door for a while, then stretched out her palm. The moment the palm of her hand touched the door, Nina used a little force.
The door opened silently. Nina was also slightly surprised. She whispered, "Is it opened like this?"
Sariel was also slightly surprised. In her opinion, to open this door, she should at least need to attack it many times. But now it seems that it opened with just a light push.
The inside of the black castle does not look very dark, although there is not a lot of brilliance at the moment when the door is opened, bright white lights can be seen.