Orphie and Magnus (the tail), Orpheus, as demonstrated in the leaks and recent story developments as of 2.1 in ZZZ. Orpheus follows the character troupe of a clumsy girl failure. Similar characters that follow this are Sucrose from Genshin Impact, and Huohuo from Honkai Star Rail. This troupe is totally fine on its own, but feels out of place for a character from an elite defense force unit that deals with dangerous and difficult expeditions.
It did not help when in her first appearance from the 2.0 teaser gave everyone the impression that she would be a serious badass. If she had a different first impression, I don’t know if it would make a difference. The problem with the character in most cases with gacha games, they would stay as the clumsy type without any developments to overcome them and they would often be possessed by another entity to pick up their slack. The gap moe is there, but to most people the negatives of the character outweigh the positives brought out by the other entity. At that point, why not make the other entity the main character from the start.
A way that this character would work would be someone like Naruto where the other entity, that being the nine-tail fox, is reluctant towards the will of Naruto. The dynamic being where Naruto needs his power to take on certain obstacles and needs to be convinced to cooperate. Orphie and Magnus having a Mentor and Student relationship doesn’t seem to work in my opinion.