Name: Eight Trigrams Sealing Style (八卦の封印式, Hakke no Fūin Shiki; English TV "Eight Sign Seal")
Type: No rank, Supplementary, Short range (0-5m)
User: Minato Namikaze
Debut (Anime):Naruto Episode 1
Debut (Manga): Chapter 1
The Eight Trigrams Sealing Style, consisting of two Four Symbols Seals, was used by Minato to help Naruto Uzumaki access the chakra of the Nine-Tailed Demon Fox sealed within him. This seal weakens over time. To strengthen the seal again when it gets too weak, Minato drew a key on the abdomen of the scroll toad Gerotora.