Flash!
Shirohibe's underwent an Existence Evolution through the use of my Skills, coupled with a dozen of materials to compensate for the lack of power. The good thing about forced evolutions is that I was able to control what they could evolve in a certain way.
By adding certain parts, they could gain new Attributes of Magic, or the ability to breath fire… however, if I were to do this too much, the results could be detrimental. This is why it is necessary to add a lot of materials that already held a strong affinity with the 'recipient', the subject that will undergo forced evolution.
Shirohibe's body absorbed all the materials synthesized into her body as an eerie and ominous presence coated her new body, her scales grew pale blue and her skin became even paler, almost transparent, her bones could be seen from time to time.
Check "The Protagonist's Sister Is Actually the Strongest"!