Ichigo Kurosaki is an ordinary high schooler—until his family is attacked by a Hollow, a corrupt spirit that seeks to devour human souls. It is then that he meets a Soul Reaper named Rukia Kuchiki, who gets injured while protecting Ichigo's family from the assailant. To save his family, Ichigo accepts Rukia's offer of taking her powers and becomes a Soul Reaper as a result. However, as Rukia is unable to regain her powers, Ichigo is given the daunting task of hunting down the Hollows that plague their town. However, he is not alone in his fight, as he is later joined by his friends—classmates Orihime Inoue, Yasutora Sado, and Uryuu Ishida—who each have their own unique abilities. As Ichigo and his comrades get used to their new duties and support each other on and off the battlefield, the young Soul Reaper soon learns that the Hollows are not the only real threat to the human world.

A Shinigami named Baishin who was sealed by Soul Society long ago is set free on Earth. On a fateful day Ichigo encounters him and has roughly half of his reiatsu drained. Its now up to Ichigo and the Soul Society to finally put a stop to Baishin and his destruction.

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. (Source: ANN)

Extra bits meant to add to the Blue Seed story. Episodes 1-13 are extras shown on the video releases of Blue Seed in Japan. They take place after every other episode, such as Omake 1 follows episode 2. Episode 14 is an extra featured with OVA Blue Seed 1.5.