Wending his way home after a bender one evening, master moocher and
game programmer Keita Ibuki decides to satisfy a craving for ramen at a
noodle stand. Instead of slurping soup, though, he surrenders his meal
to a manic girl who, unbeknownst to Keita, is a Mototsumitama, a
guardian of the coexistence equilibrium. When his new acquaintance is
attacked, Keita gets caught in the crossfire and loses an arm.
Awakening from the shock, Keita finds himself back in his apartment,
arm intact! But just whose arm is it?!