The "Kani-Kani Scam" (literally "Crab-Crab Scam") is a type of telephone fraud where scammers pose as seafood vendors from Hokkaido, Japan's northernmost prefecture famous for its premium crab. While the name might sound amusing, this scam is a serious issue that generates thousands of complaints to Japan's National Consumer Affairs Center annually.

It comes in two forms. One is high-pressure telephone solicitation that pushes the victim into a contract. The other is the unsolicited shipment of goods sent cash-on-delivery (COD) to someone who never ordered them, known in Japan as "negative option" selling. The National Consumer Affairs Center counts both together.

The Scale of the Problem

According to Japan's National Consumer Affairs Center, complaints about seafood telephone solicitation and unsolicited deliveries have fluctuated as follows:

  • FY2020: 2,282 cases
  • FY2021: 5,205 cases (more than double the previous year)
  • FY2022: 4,994 cases
  • FY2023: 2,876 cases
  • FY2024: 3,538 cases
  • FY2025: 4,358 cases

The pattern worth noticing: complaints fell back after the 2021–2022 peak, bottomed out in FY2023, and have been climbing again since. FY2026 stood at 273 cases as of May 31, against 428 in the same period a year earlier.

Cases cluster around the year-end and New Year season, when crab demand peaks. The National Consumer Affairs Center has issued consumer warnings jointly with Hokkaido Police Headquarters, in November 2023 and again in November 2024.

Arrests have followed. In June 2023, Hokkaido Police arrested company officers in Sapporo on suspicion of violating the Act on Specified Commercial Transactions, for selling foreign seafood at prices far above its worth while claiming to be a Hokkaido fisheries business. On July 1, 2026, Sapporo Chuo Police arrested seven people, including a self-described company executive, on suspicion of making false statements under the same law. Between October 2025 and January 2026 they allegedly told four people in their 50s to 70s, in Kanagawa, Kumamoto and elsewhere, that seafood "normally 30,000 yen" was available "today only for 19,800 yen," when no such 30,000 yen price existed. Police put the group's revenue at more than 900 million yen and are investigating whether it operated as an anonymous, fluid criminal group (as of September 2026).

How the Scam Works

1. The Initial Call

Scammers typically open with phrases designed to create false familiarity:

  • "Thank you for your previous purchase"
  • "This is XX Seafood Company that you ordered from before"
  • "We're calling from a Hokkaido food exhibition"
  • "Due to COVID-19, we're struggling and need your support"
  • "Because of overseas import restrictions, we need help selling our products"

2. Persuasive Sales Tactics

Callers often use the victim's name to create a sense of personal connection and employ high-pressure sales techniques:

  • "These are 4L-5L sized crabs with meat packed tight in every leg"
  • "Originally priced at 40,000-50,000 yen, special price today only: 19,800 yen"
  • "This is a limited-time offer, today only"
  • "I guarantee this will be one of the top three crabs you've ever eaten"

3. Aggressive Closing and Forced Shipments

Even when refused, scammers continue pressing. In worst cases, they ship products via COD despite the victim's clear rejection.

4. What Actually Arrives

Products received typically differ drastically from what was promised:

  • "Hokkaido crab" turns out to be cheap imported seafood
  • Overpriced crab with barely any meat inside
  • Missing items from the described package contents

How to Identify This Scam

Be suspicious if you notice these warning signs:

  • Calls from mobile numbers starting with 080 or 070
  • Refusal to provide company name or address
  • Claims of previous purchases you don't remember
  • Excessive appeals to sympathy or emotion
  • Vague about product weight or specifications
  • Pressure tactics using "limited time" or "special offer" language

How to Protect Yourself

Handling the Call

  1. Refuse firmly: If anything seems suspicious, clearly say "I'm not interested" and hang up
  2. Verify information: Ask for company name, address, and phone number, then offer to call back
  3. Use voicemail: Don't answer unknown numbers; check messages first
  4. Share information: Especially important for households with elderly members

If Products Arrive

  1. Refuse delivery: You can turn away a COD package at the door
  2. No obligation to pay: You owe nothing for goods you never ordered. Since the July 6, 2021 revision of the Specified Commercial Transactions Act, there is no duty to store an unsolicited shipment either. You may dispose of it immediately
  3. If you already paid: You can demand a refund from the seller, though recovering the money is difficult in practice. Not accepting the package in the first place is far more effective

Cooling-Off Rights

If you were pressured into a telephone purchase, Japanese law allows an 8-day cooling-off period (unconditional cancellation) from the date you receive the contract documents. Perishables like seafood are covered. Note that unsolicited shipments are a different matter: no contract exists in the first place, so the remedy is simply that you owe nothing, not cooling-off.

Where to Get Help

If you encounter this scam in Japan:

  • Consumer Hotline: 188 (pronounced "i-ya-ya!" meaning "No way!")
  • Police Consultation Line: #9110
  • Local Consumer Affairs Center: Available in most municipalities

What About Your Country?

This type of telephone fraud has become a significant social issue in Japan. What about in your country? Are there similar phone scams targeting consumers? How do people protect themselves from telephone fraud where you live? We'd love to hear your experiences in the comments!

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