Hello!
K is a 2008 manga series created by the animation studio GoHands and GoRA. The series is directed by Shingo Suzuki, who also serves as its character designer.
Ref: https://www.animeunited.com.br/noticias/animes/k-project-a-serie-youtube/
The series is set when Japan is secretly being ruled by seven Kings of psychic clans called the Seven Clans of Color. Yashiro Isana, a seemingly normal student of Ashinaka High School, is targeted by HOMRA of the Red Clan and Scepter 4 of the Blue Clan, following the murder of pacifist Tatara Totsuka from HOMRA. With the help of a highly skilled swordsman named Kuroh Yatogami and a feline Strain with the ability of sensory interference named Neko, Yashiro rediscovers his true identity.
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