name: Gyutaro/Daki (Upper Rank Six of the Twelve Kizuki)
Physical Prowess: Immeasurably Strength, durability, speed
Physical Prowess: Unlimited Stamina, Endurance, Power.
Demon Prowess:: Nigh-Absolute Regeneration.
Demon Arts:: Obi Sash Manipulation & Hemokinesis.
Overall Skill:: Gyutaro is vastly stronger than Daki.
power: 20
guard: 20
magic power: 20
magic guard: 20
speed: 20
Shared Biology: Gyutaro and Daki possessed a rather abnormal trait not seen in most demons. Despite the fact the siblings are two different people, the two had essentially a single body. Which grants them immunity to dying since both siblings have to be decapitated at the exact same time otherwise they will not die no matter what. Gyutaro is a boy and Daki is a girl.
Write a detailed fight scene.