Shinku Yūhi

is a jōnin-level shinobi from Konohagakure and an Instructor that oversees the training of genin and chūnin-level shinobi in the village.

Background
During the Nine-Tailed Demon Fox's Attack, Shinku was seen placing the younger shinobi inside a barrier, informing them that they were to stay out of the fight against the Nine-Tailed Demon Fox, to which his daughter Kurenai voiced her discontentment. Shinku told his daughter that she was a shinobi who may or may not live a long life, and requested of her to live long enough to give him a grandchild whom the Will of Fire could be passed to.

Personality
Shinku is a firm believer in the Will of Fire and considers that Konohagakure's young shinobi should not engage the Nine-Tails as they were the future of the village and that future should be protected.

Appearance
Like his daughter, Shinku has black hair, and very distinctive ringed, red eyes. He also has a very prominent jawline and wore the standard Konoha shinobi outfit with what appeared to be slightly longer sleeves than usual, shinobi sandals, his forehead protector which he wore like a bandanna, and a flak jacket. Shinku also carries a sword strapped vertically over his right shoulder and a small cylindrical object strapped to his right lower back.

Abilities
Shinku is at least proficient in kenjutsu considering he carries a sword with him. His skills are further attested to by his status of an Instructor entrusted with the training of genin and chūnin-level shinobi within the village.

Trivia

 * means "deep crimson".