K: SEVEN STORIES "SIDE:BLUE - Sirius - "

A year has gone by since the Blue Clan SCEPTER 4 has disbanded and the Red Clan HOMRA took over as the unofficial go-to people for dealing with the underground community. Lately, the stress of having to constantly keep his destructive power under control is causing the Red King Mikoto Suoh to become unstable. Meanwhile, Reisi Munakata is chosen by the Dresden Slate to become the new Blue King. Believing this to be his true calling, Munakata uses his newfound power and skill as king to rebuild SCEPTER 4. Munakata then turns his attention to HOMRA and Mikoto Suoh, whom he believes pose a risk to the safety of the world. When the two young kings cross paths for the first time, a new battle begins in the story of the seven kings…

Sukuna Gojo is a boy who ran away from his wealthy home after becoming disgusted by his controlling parents. Since then, he’s been surviving alone on the streets using an SNS app called JUNGLE, which grants its user unnatural power and abilities. One day, Sukuna comes into contact with the founder of JUNGLE, the Green King Nagare Hisui. Wanting to learn more about the mysterious Green King, Sukuna decides to climb up the ranks of JUNGLE so that he can meet Hisui in person. But in order to reach the highest rank, Sukuna must defeat the most powerful user in JUNGLE.

Adolf K. Weismann is sharing a peaceful meal with his loved ones, while Misaki Yata is having a blast hanging out with his HOMRA buddies. Elsewhere, Seri Awashima is working diligently to carry out her duties as SCEPTER 4, and Sukuna Gojo runs across the battlefield to fulfill the dream of JUNGLE. But as the days go by, something starts to feel off about the events that are going on in this world and the people bound to it.

After the events of the Blue Dragon series, Shu and Bouquet join a resistance group to fight General Rogi's army of invasion.They encounter a mysterious child , Noi, who has the power to revive Shu's shadow counter-part Blue Dragon, and save her from the pursuit of a red dragon. Now Shu and his company have to set foot once again on a journey to discover the purpose of the dragons, undergo their tests and stop the chains of events which threatens the fate of humanity.