In the afterlife, people go to school to purify their soul so that they can be reincarnated. Riyon is one of these deceased, though she has no intention of spending great effort into her purification and plays Go with an old Guru instead. So, as a corrective measure, the principal sends her down as a Spirit Guardian to purify the soul of someone who has been overly corrupted and lost his Guardian.
Limiting her stay by choosing a person who is bound to die soon, she realizes she has picked possibly the most lonely and bullied person of Japan: Prime Minister Souichiro Kasuga.
This work contains following tropes:
- Bare Your Midriff: Riyon all the time.
- Black Eyesof Evil: Happens to anyone who's possessed by evil energy, most prominently Kubo and his sister.
- Dark and Troubled Past: Kubo has one. He and his sister's powers only ever scared them and caused them harm, and the inspector who was his only proper father figure and who showed him unconditional trust and affection ends up dying.
- First-Episode Spoiler: Riyon is the guardian of the bloody PM of Japan.
- Guardian Angel
- Lighterand Softer: Though not afraid to go into dark and serious subject matter like the dangers of nuclear power and kubo's entire backstory, it's still one of Takahashi's more optimistic works, especially compared to the very dark Jiraishin and Sidooh.
- Mundane Afterlife: You go to school.
- Past-Life Memories: You remember them when you're in the afterworld, but forget them temporarily when you reincarnate.
- Telepathy: Kasuga.
- 0% Approval Rating: Kasuga's support has sunk as low as 2%. And he is not even a villain.