Twilight Children can undergo a process known as Transformation which allows them to reach a higher rank and unlock more abilities. Currently, the only available Transformation is from Rank 0 to Rank I. To Transform a Twilight Child you own, simply comment with either a ping or a link to the Twilight Child, as well as a Transformation Item and the result will be rolled. You will receive a reply when the new image is drawn and the character is updated on the site.