Once the undead creature saw Yusuf Zuck open the bottle, he immediately became tense. One must know that it contained the spiritual energy of four ancient beings, along with the souls of these great beings.
Although these ancient beings had lost their physical bodies, in terms of spiritual prowess, they could still easily slaughter with a single thought.
Fearing that Yusuf Zuck might make a mistake, the undead sprang up, tried to release his realm, and then created a halo, enveloping them both and the bottle.
Yusuf Zuck did not stop him. The saying "better safe than sorry" rang true. In this world, if one wasn't careful, they might be devoured unknowingly.
As the bottle was opened, Yusuf flicked his finger and inhaled deeply, drawing out a ray of light, which he then wrapped tightly within a small circle of fire at his fingertip.
