- Name: Summoning: Water Style: Grand Turtle Shell Shield (口寄せ・水遁・豪亀盾殻 Kuchiyose: Suiton: Gōki Junkaku)
- Type: Ninjutsu
- Hand Seals: Tiger, Serpent, Rabbit, Dog
- Users: Ankō Shachihoko
Ankō calls forth his personal summon, the giant turtle Gōen. Gōen is large enough to be Ankō's mount, and can use various water-based jutsu of his own when Ankō's own power isn't enough to take on his foe.