Kawahira Keita is a descendant of a historic Inukami tamer family; however, because he lacked in its ability, he was forsaken by the family. One day, an Inukami named Youko came. She looked graceful, obedient, above all, beautiful. Soon he contracted with her, and she paid homage to him. However, she was a problematic Inukami that no one had been able to control. This is a slap stick comedy of an Inukami Tamer, Keita and an Inukami, Youko. Keita is a man of worldly passions, and he likes money and girls very much. On the other hand, Youko likes to destroy things and is very jealous. (Source: AnimeNfo)

Inside the human body, roughly 37.2 trillion cells work energetically 24 hours a day and 365 days a year. Fresh out of training, the cheerful and somewhat airheaded Sekkekkyuu AE3803 is ready to take on the ever-so-important task of transporting oxygen. As usual, Hakkekkyuu U-1146 is hard at work patrolling and eliminating foreign bacteria seeking to make the body their new lair. Elsewhere, little platelets are lining up for a new construction project. Dealing with wounds and allergies, getting lost on the way to the lungs, and bickering with similar cell types, the daily lives of cells are always hectic as they work together to keep the body healthy! [Written by MAL Rewrite]

Money is power, and without it, life is meaningless. In a country whose economy is in shambles, second-year Economics university student Kimimaro Yoga understands this fact all too well, as he is surrounded by the relatively luxurious lives of his peers and struggling to make ends meet. However, his world is turned on its head when a stranger in a top hat arrives one late night at his door. Going by the name Masakaki, the visitor petitions Yoga to come to the Eastern Financial District, a place where money flows in abundance if one offers their "future" as collateral. Although reluctant, greed triumphs reason and Yoga accepts the offer; thus, taking on the mantle of an "Entre." But unbeknownst to him, the land of wealth he has entered is an alternate realm built in the likeness of his own, where Entres are forced to participate in weekly duels called "Deals," with their collateral at stake. Pitted against his countrymen and fate, Yoga must quickly adapt in this new world if he hopes to protect his fortune and future—and discover just how much money is truly worth. [Written by MAL Rewrite]

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.