Studio details
| Name | Circle Billion |
| Alias | サークルBILLION |
| Lang | 
Japanese |
| Type | Amateur group |
More information (External pages)
| Other links | VNDB Profile VNStat |
| Name | Circle Billion |
| Alias | サークルBILLION |
| Lang |
Japanese |
| Type | Amateur group |
| Other links | VNDB Profile VNStat |
