With Ye Mo’s time & space body seal Ryuu has had a month of training in one week.

Ryuu had spent the first two weeks learning to merge and control Ye Mo’s body. Normally when someone merges with a beast they will lock and seal away the creatures conscious, to keep them from rebelling.

But because Ye Mo’s cage is unlocked and a mutual seal he has his conscious. Thanks to Ye Mo’s guidance Ryuu’s has been learning at an extremely fast pace.

After a week of rock smashing Ryuu finally got the hang of merging with Ye Mo, so Ye Mo moved onto teaching him fire attacks.

Ye Mo showed Ryuu how to gather and concentrate his qi in his chest then take a deep breath using fire style and exhale. This is Ye Mo’s kalama breath roar (fire breath).

After Ryuu learned how to merge and use Ye Mo, Ye Mo explained his concept of light to Ryuu. Then with Ye Mo’s guidance after a few days he started to grasp his own concept of light and began to be able to use the Ignis kunai.

Then one day during the third week he had a breakthrough while cultivating. While meditating on the concept of light, he concluded “Where ever there’s light, there are shadows.”

His eyes suddenly opened as he jumped to his feet as he focused his qi and summoned the Caligo kunai.

With one hand he controlled the floating kunai and with the other he manipulated the shadows. He had two shadows one on either side of the blade, with his left hand he maneuvered the kunai through the air. As it flew past a boulder, he used his other hand and the two shadows became as strong as iron as he guided them to the boulder. They pierced through the stone, splitting the rock into tiny pieces.

After seeing this Ye Mo who was watching from inside his cage was astonished "There’s no doubt He’s Kuro Dosojin son.” Thought Ye Mo.

He then asked “Ryuu do you know what primordial bloodline you have?”

“I just found out I have a primordial bloodline!” exclaimed Ryuu

“Well I guess I should tell you then, you have the Kage Scultone primordial dragon bloodline.” Said Ye Mo

“Kage Scultone? So I’m a shadow elemental? Because at the academy my dominant element was always fire.” Ryuu asked curiously.

Ye Mo explained to him “Yes, all dragons have a strong grasp towards fire. But the primordial dragon are unique, a side from fire they also possess a second element. Like me of the time & space primordial dragon bloodline. Seeing how you already have a strong grasp of darkness I will teach you a special technique you father created. Only someone with your bloodline can do this technique.”

“His fathers special technique” Ryuu could feel his anticipation building up inside as he listened intently.

“This technique is called Cendrillion. This is a move combing flames with shadows, when you get the flames and the shadows to intertwine you will get black flames. The shadows can then seek out and attach to a target and the flames will feed off the shadows creating eternal black flames that can burn everything to ashes.” said Ye Mosternly as he narrowed his brows.

Ryuu spent the next two weeks learning to combine his flames and shadows. After the third week he was finally able to perfectly combine the two elements and learned to create the Cendrillion in his hands.

Ye Mo couldn’t believe how fast he was learning “Was this kid even human?” thought Ye Mo facetiously.

Early in the morning a few days later Ryuu asked “Ye Mo, are there any other shadow techniques you can teach me?”

"Well seeing how you all ready mastered the Cendrillion, hmm I know one or two more I can show you.” Said Ye Mo after he pondered for a bit.

“Well! Out with it already dragon gramps!” Said Ryuu anxiously.

“hush you insolent child, show respect for your elder. Next I will teach you a secret technique, shadowportation and shadow portals.”