Early one New Year's morning, the rounin Senou Souichirou appears in Edo's Katagi tenements.

Initially, the inhabitants regard him with fear and suspicion: Kankichi, the carpenter's son, thinks he may not be human; the neighbourhood cats remark that he reeks of blood. But soon Souichirou pawns his sword, and, with a bamboo replica at his waist, settles down to a quiet life as the neighborhood school-teacher.

Months pass, and all appears to be well. But trouble will not leave the Katagi tenements alone...

Notes:
- Won the Grand Prize at 15th Tezuka Osamu Cultural Prize in 2011.
- Includes 1 extra chapter.