Summary:

Keita Ibuki is an independent and struggling freelance computer programmer who, with two of his friends, is developing and trying to sell a video game program to big-time video game companies in Tokyo while trying to stay afloat and survive financially with money being given to him by his 21-year old childhood friend Akane Sano. He had a chance meeting on one night with a high Mototsumitama named Kuro while eating alone at a ramen stand. He gives her his dinner, a bowl of ramen, and tries to protect her when she is attacked in an ambush by an unknown Mototsumitama. Keita loses his entire left arm during the fight between the Mototsumitamas, but Kuro was able to save his life by exchanging the decapitated arm with her own left arm since she has enhanced healing abilities like all Mototsumitamas. This creates a contract between them, which makes her more powerful than before. However, Kuro warns Keita that they need to be together all the time in order to be at their strongest.

As Kuro stays with Keita and gets acquainted with him while meeting with other Mototsumitamas and their human masters, they are targeted by the strongest Mototsumitama clan of the East, the Shishigami (Lion God) Clan in an attempt to kidnap Akane and bring about the destruction of the coexistence balance, which Mototsumitamas are supposed to protect. Meanwhile, Keita is determined to find out why his mother had died after seeing her double as a young boy and find out who is responsible for trying to destroying the coexistence balance on Earth.

Main Characters:

Keita Ibuki, Kuro, Akane Sano, Excel, Steiner, Reishin, Mikami Houjou

Genre: