Akarinashi Soba

Hideki Araishi. It is relinquished to Tetsuo Tsutsumi.

When Honjo was filled with samurai residences, the spies of the shogunate lived amongst the townspeople to keep an eye on things.
The soba cart on South Warigesui served as one of their outposts. They would communicate to each other in code by turning the lantern on or off. "Tonight at 4 a.m." meant that someone would be having the last soba of their life, and that their belly would be sliced open the next night.
An unfortunate incident occurred in which a man attacked a woman in a bout of fury. He regretted it deeply, even declining to invoke the right to defend his honor — but the deed was done. Still, he could not accept it. His rage at having been used by his daimyo boiled over, turning into a grudge he would never forget. Nearby, he saw a lantern quietly glowing in the night, and when the sixth bell rang, the man cut his own stomach open.
Since then, the lantern could be seen alight before the soba cart had opened, and would flicker out suddenly even when there was no wind blowing. As this unsettling phenomenon continued, the rumors surrounding it grew, and soon all were convinced that it was the man who cut open his stomach visiting from the beyond.

Tomezo was a ronin hired by the daimyo to stop Okoma from seeking information on her husband's alleged suicide, but once she accused him for his death, Tomezo killed her in a fit of rage. Ordered to commit seppuku for his crime, Tomezo killed himself in front of the spies' soba cart to expose the daimyo's plot.