I imagine that everything that I invoked will be monsters, and then through evolution they will begin to take on a human appearance, it would be great if I had all the beasts of the original yue yang, and others, all women of course, if you are going to invoke some girl from another anime, then it would not make much sense, but if you do, then everyone starts as monsters, and then through evolution and practice, you will get the skills and appearance of that anime girl, also if you change the I generate the wolf that yue yang got, and he hired her, and her way of evolution is different and she takes on a human appearance, like the mother of sesshomaru of inuyasha, but a little bit more beautiful still, and with other clothes
ah, and please, do not rush, so move forward at a good pace, neither slow nor fast, I could find all the waifus of the original harem and many more, the quality is good, it has a future future, you have the MC become OP, but through training, suffering, not like in other novels where the MC is broken from the first chapter, and put limits on your ability to devour souls, as an example, you can not devour a soul if the enemy's strength is greater than yours, the MC would not be broken with the skill, the appearance of your guardian in beast form, maybe it is horrible, normal or cute, but through evolution it will take on a beautiful appearance of a seductive woman, a Appearance of succubus, yes, it's perfect!