Chase added a Fehu, rune of beginnings to his chest, one of the foundational runes, following the book of Dark Chaos to the letter. It was painful, he read that Chaos Rune Magic was transformational, and Fehu allowed a Dark Chaos magic to start passively generating within his body.
As it filled his body, he also added the next rune, Uruz of Force, allowing his body to get stronger from the magic of Chaos. From there he added the third and final rune he could add, Thorn. Thorns power flet sharp, as if his magic was a blade to cut. Three runes covered his heart, this was Magic Refined Stage, he was 3rd layer Magic Refined stage Chaos Student. Using spells generated internally, he could strengthen himself, and cast simple spells.
"With simple casting, I can actually get a better paying job and leave this dinghy apartment."
From there, he washed up, casting a simple cleaning spell, as Fehu refilled his reserves, and also passively increased his strength. "As long as the runes saturate my body, I can also increase the amount of runes on my heart, when I get to all of the first seven, I can then wait for my magic to increase to then add the eighth rune, for the Magic Foundation Realm and become a Chaos Apprentice!
From Grimoire of Dark Chaos: There are 24 runes of Chaos, every seven runes a Chaos initiate adds to their body, they rise in power.
First seven: Magic Refined.
second set of 7: Magic Foundation.
3rd set: Mid Chaos.
4th set: Late Chaos.
For the Peak to Ascended Chaos, the 25th rune, all previous runes must be combined into Wyrd, and the Chaos Sorcerer has completed their cultivation. Having control over all Chaos Magic and turning Order into Chaos.