Crimson Soul Fist - Seal is a technique seemingly used to shield the user and repel and immobilise any targets that come into the technique's range. The user gathers red-coloured Shinsoo between their hands and then slams their hand into the ground. Then, a red sphere expands from the place where they hit and pushes away enemies, seemingly leaving them unable to move whilst also sealing him from reach. The technique can be overpowered however.