The map holds 9,113 shops from Daiso, Seria, Watts and Can Do. All four chains are in all 47 prefectures. The spread is not the same: Can Do has more shops in Hokkaido (152) than in Tokyo (145), Watts ranks Hiroshima second (107) behind Osaka (169), and Seria has more shops in Aichi (183) than in Tokyo (138).
Four chains, four footprints
For a Daiso shop, the nearest shop of another chain sits at a median of 0.9 km. 56.5% of Daiso shops have another banner within 1 km. For Seria that median is 0.7 km, and the share within 1 km is 64.4%.
In Okinawa the gap is the count: Daiso 65, Can Do 37, Seria 7, Watts 3.
| Chain | Places | Prefectures | Median to another chain | Within 1 km of another chain |
|---|---|---|---|---|
| Daiso | 3,639 | 47 | 0.9 km | 56.5% |
| Seria | 2,171 | 47 | 0.7 km | 64.4% |
| Watts | 1,955 | 47 | 0.9 km | 55.3% |
| Can Do | 1,348 | 47 | 0.7 km | 63.5% |
Where the shops pile up
Tokyo (647) and Osaka (632) lead the whole set. Hokkaido is third (490), pulled up by Can Do. Kanto holds 27.4% of the places.
| Prefecture | Places | Percentage |
|---|---|---|
| Tokyo | 647 | 7.1% |
| Osaka | 632 | 6.9% |
| Hokkaido | 490 | 5.4% |
| Aichi | 476 | 5.2% |
| Kanagawa | 461 | 5.1% |
| Saitama | 456 | 5.0% |
| Chiba | 410 | 4.5% |
| Hyogo | 394 | 4.3% |
By region
The same places, added up by region.
| Region | Places | Percentage |
|---|---|---|
| Hokkaido | 490 | 5.4% |
| Tohoku | 782 | 8.6% |
| Kanto | 2,496 | 27.4% |
| Chubu | 1,481 | 16.3% |
| Kansai | 1,696 | 18.6% |
| Chugoku | 748 | 8.2% |
| Shikoku | 332 | 3.6% |
| Kyushu | 976 | 10.7% |
| Okinawa | 112 | 1.2% |
The data used in this study were set on 23 October 2026.