Even if I have to force her

Calling her a sorceress is not right.

Eli remembers the day he saw her for the first time. Back then, he felt that she was touched by magic.

For the next two years, there was no change. She remained the same. Sometimes, it felt like she was frozen in time. The world went on, but she lived her days in the same manner. He could only watch her. 

Everything changed that day. 

At first, he was surprised. Then, he realized that her magic was also changing. He couldn't see Devil at the beginning. As the seal got weaker, Devil became stronger. The presence of her magic is also getting stronger. 

Without a doubt, the seal is powerful. A powerful seal is needed to seal powerful magic. Amachi also said that keeping the seal intact would harm her because her magic can't be stopped anymore.