It's possible that there's a group of adventurers or knights in the story. They might be friends or allies of the saint. They could accompany the saint on her quests and help her in battles. The interactions between the saint and these characters would add depth to the story, showing how her omnipotent magic affects those around her.
There may be a prince or a noble who is involved with the saint. He could be someone who is initially skeptical of her power but later comes to rely on it. Maybe there's also a wizard or an old sage who serves as a mentor to the saint, guiding her in the use of her omnipotent magic.
It might be depicted through her ability to perform miracles, like healing the incurable or bringing the dead back to life.
In many such fictional settings, the concept of an omnipotent magic for a saint might be related to the balance of the world in the story. Her magic power could be omnipotent to counteract great evils or restore order. For example, if there are dark forces threatening to destroy the world, her magic is the only thing that can stop them, thus it is made omnipotent by the story's design.
The saint herself is surely an important character as the story is named after her and her omnipotent magic power.
There could also be some other characters related to the saints, like their apprentices or followers. They may inherit or be influenced by the saints' omnipotent magic power. Maybe there is a young character who is being trained by a saint and gradually shows signs of having a very powerful magic due to the saint's teachings.
One unique feature could be its exploration of the concept of omnipotent magic power. It might show how the saint uses this power in various situations, like saving the kingdom or helping the common people.
The theme of sacrifice could also be in it. Having omnipotent power doesn't mean that there are no costs. There might be situations where the saint has to sacrifice something in order to use her power for the greater good. This could be relationships, her own well - being, or other aspects of her life. And the theme of destiny is likely as well. With her special power, is she following a pre - determined path, or can she shape her own destiny? This exploration of free will and fate is often a common theme in light novels.
I haven't read this novel in detail, but generally, it might involve the saint using her omnipotent magic power to face various challenges, like fighting against dark forces or solving complex problems in the story world.
Antagonistic characters are also likely to be important. They could be those who envy the saint's omnipotent power or those with their own motives that conflict with the saint's use of power. Their interactions with the saint create conflict and drive the story forward.
Obviously, the saint herself is a very important character. Her omnipotent magic makes her stand out.
A common theme is power and responsibility. Since the saint has omnipotent magic power, she has to decide how to use it. Another theme could be isolation. Her great power might set her apart from others, making her feel lonely at times.