Masked Katana Robbery Suspect Arrested After Victim Recognizes Him as a Possible Acquaintance

It may have been the result of a personal dispute

The man, tanned and wearing stylish-framed glasses, walked out of Nerima Police Station with a steady stride.

“On May 16, suspect Yutaka Kobayashi (58) and another individual allegedly pried open the door with a crowbar and broke into an apartment in Nerima Ward, Tokyo. They are accused of assaulting the male resident by striking him on the head and stealing two Japanese swords worth approximately ¥200,000. They were arrested on suspicion of robbery and unlawful entry.

The victim and Kobayashi knew each other, and Kobayashi had previously visited the apartment, so he was aware that Japanese swords were kept there. Although Kobayashi wore a ski mask to conceal his face during the break-in, the victim reportedly recognized him.”

— National newspaper crime reporter

Japanese sword thefts are not uncommon. In 2018, more than a dozen swords were stolen from a residence in Chigasaki, Kanagawa Prefecture. In 2023, a traditional chest containing seven Japanese swords valued at approximately ¥20 million was stolen from the home of a physician in Namegata City, Ibaraki Prefecture.

“The motive in most sword thefts is believed to be resale, but once stolen swords are traded or transferred through underground channels, the chances of recovering them become extremely low.”

— The same reporter

There has even been a case in which a stolen Japanese sword returned to its rightful home after 30 years.

In 1986, two Important Cultural Properties—a Japanese sword titled “Bishū Osafune-jū Motoshige” and a tantō dagger titled “Awataguchi Yoshimitsu”—were stolen from the former Sakai family, rulers of the Shōnai Domain. Their whereabouts were publicly disclosed by Japan’s Agency for Cultural Affairs in January 2015.

The thief was apprehended, and the Yoshimitsu dagger was repurchased by Chidō Museum in Tsuruoka, Yamagata, in 1999. However, the Motoshige sword changed hands repeatedly and remained missing for many years. Although its location was finally discovered in 2014, Japanese civil law only allows victims to demand the return of stolen property without compensation within two years of the theft. Furthermore, the sword had acquired a price tag of ¥100 million, forcing the Sakai family to abandon efforts to buy it back. Ultimately, a private collector, with the family’s approval, purchased the sword and lent it to Chidō Museum, where it was exhibited in September 2015, marking its first return home in 30 years.

Crime journalist Taihei Ogawa, however, believes the current case was not motivated by resale.

“To legally possess a Japanese sword in Japan, an owner must have a registration certificate issued by the prefectural board of education. The same certificate is required for any legitimate sale or transfer, meaning a stolen sword cannot be sold through legal channels.

In this case, the suspect knew the victim personally, and the stolen swords were not especially valuable. Considering those circumstances, it seems more likely that a personal dispute was involved. Since the allegation is robbery involving injury to the victim, there is a strong possibility that, if convicted, the suspect could receive a prison sentence of at least four years.”

Kobayashi has reportedly denied the allegations, stating, “I did not commit robbery.”