Shinsu Loop is a special technique that "gathers and stores" Shinsu non-stop and releases it. Yu Han Sung explained the theory of this technique to Baam because he himself cannot use it, requiring stability in dividing Shinsu power. Baam was able to overcome this weakness due to him being "blessed by Shinsu", meaning, his Shinsu power has stability and never gets weaker as he divides his Shinsu power. Han Sung specifically invented this technique's concept to help Baam become strong enough to defeat Kallavan. Baam creates a revolving ring of Shinsu in order to perform this Shinsu loop.
Ordinarily, a person's Shinsu power will decrease as the amount of Baangs they control rise. But, in Baam's case, his Shinsu power remains the same no matter how much baangs he uses. Since he is the exception, he can continue to gather the Shinsu around him. People like Baam are often called as people that are "Blessed by Shinsu". The so-called "Genius Wave Controller" Yu Han Sung wasn't even quite as blessed as Baam, although the Shinsu he controls is as pure as Baam's (pure Shinsu is identical to water).
While not as talented as Baam, other examples of people who are "blessed by Shinsu", would be Kallavan and Ha Jinsung. In Kallavan's case, while the main reason he could survive Jinsung's deadly attack was because of the Essence of Bravery, his own "blessing" also took a big part in it. "Being able to absorb Shinsu, means you can keep drawing in energy". The skill that Jinsung used to give Kallavan a wound he couldn't recover from probably used a similar mechanism to the Shinsu loop.
After seeing Baam become stronger in part III, Yu Han Sung came up with the idea to use this incredible natural gift of Baam, for him to create a Shinsu loop that "runs non-stop" so Baam can store up even more power. Such an unlimited, non-stop running storing process will keep increasing the density of Shinsu because it will be pressured against each other countless times. There won't be much Shinsu at first glance, but the power of Shinsu stored in a loop process like that would be like a "sea of Shinsu". The destructive power of Shinsu like that would almost be "infinite". The power over the Shinsu loop that Baam currently controls now can slash or cut any tall building in half and kill strong regulars at Akryung's level.
- Focused Shinsu Control Skill - Water Dragon (집중형 신수 제어술-수룡)
- Focused Shinsu Control Skill - Chang Dragon (집중형 신수 제어술-창룡)
- Intensive Shinsu Control Skill: Water Bomb