Old - Fūinjutsu [Apprentice]: The sealing arts were one of the only specialties that Yohei cared to hone over the years. His formulas are basic but effective, enabling him to seal simple objects such as shuriken and the like. Recently, he has tried to incorporate the secret teachings of Jashinism into his sealing techniques, but the results have yielded little of use.
New - Fūinjutsu [Journeyman]: Sealing techniques constitute one of the few skills Yohei has truly honed over the years. His formulas are basic but effective, enabling him to seal non-living objects like weaponry within paper talismans, while also providing a capacity to create explosive tags. Additionally, his formulas typically incorporate the marks of Jashin, giving the seals and their effects a distinct blood-red appearance.