# Tokyo prostitution ring investigation

> Live situation record from CLSTR: https://clstr.news/situations/tokyo-prostitution-ring-investigation
> Updated: 2026-09-20T05:44:28.000Z. Sources: 6. Developments: 2.

In September 2026, Tokyo authorities investigated illegal business operations in Shinjuku. Ryota Kasahara and three other individuals were arrested for allegedly using a residential apartment in Kabukicho to facilitate prostitution. The suspects reportedly operated a men’s esthetic salon named ‘Bonnoji,’ which advertised services such as ‘10,000 yen for 15 minutes.’ The business is estimated to have generated approximately 80 million yen in revenue. 

Police are continuing to investigate whether illegal scouting groups were involved in facilitating the operations.

## Timeline

### 2026-09-20: Tokyo crime: Prostitution ring bust and hairstylist sentenced

Tokyo authorities have arrested men for operating a prostitution venue in Shinjuku and sentenced a hairstylist to five years in prison for sexual assaults against six clients in Omotesando.

2 sources. https://clstr.news/cluster/tokyo-crime-prostitution-ring-bust-and-hairstylist-sentenced

### 2026-09-09: Tokyo business operator arrested for suspected prostitution ring

Four people, including a business operator, were arrested in Tokyo for allegedly providing an apartment for prostitution that generated an estimated 80 million yen.

4 sources. https://clstr.news/cluster/tokyo-business-operator-arrested-for-suspected-prostitution-ring

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Cite as: Tokyo prostitution ring investigation. CLSTR, https://clstr.news/situations/tokyo-prostitution-ring-investigation