Focused on Yata's and Fushimi's past. There are three parts: "Meeting," "Getting Along," and "Betraying."
In Shizume city there's a legend about a red king with demon-like abilities that single-handendly created the Homra organization, as long as you get accepted into Homra, you can gain extraordinary powers.
Tokyo Regional Legal Affairs Bureau Census Division, Annex 4 also known as SCEPTER 4 is a police institution that aims to stop criminals with special skills. But for them, their real target are... ?
The story takes place in a world where seven people with unusual powers are crowned as “kings,” and revolves around the “bonds” and “fate” between the people involved. (Source: Anime News Network)
The manga depicts what happens after the K: Missing Kings film from the viewpoints of different characters. (Source: Anime News Network)
In modern Japan, where history has strangely overlapped with reality. There, seven "Kings" with great superpowers existed. Along with their clansman to whom they shared their own power with, the kings each formed clans. Order bound by blue, red flames that cause chaos, irregularities that shine in white, and reforms branched off into green. The Kings, each with their own abilities, now... The Blue King Reisi Munakata, the leader of the Blue Clan "Scepter 4," held great responsibilities on his back. The tower that Gold King Daikaku Kokujōji supervised called the Dresden Slate was still on his mind, and he felt a great burden by killing the previous Red King, Mikoto Suoh. On the other hand, the former Red Clan "Homra" clansman Anna Kushina experienced the attacks from the Green Clan "jungle" and awakened as the next Red King. By doing this, she bound her comrades through a strong bond once again. Finally, White Clan members Neko and Kuroh believe that the White King Yashiro is still alive, and seek his whereabouts. However, it was not just them searching for the White King. The Green King Nagare Hisui once again... With "jungle" once again jumping back into action, the fates of the various Kings are brought together.
Shiro and Kuroh are not the only ones who go to high school. Instead, the members of Homra (including their leader Suoh) and the members of Scepter 4 attend school together. The students are sometimes lax, but at other times, they are hot-headed.

