Alternative Titles
CN
| Title | Type |
| 未知的首尔 |
Taiwan
| Title | Type |
| 未知的首爾 |
United States of America
| Title | Type |
| Seoul, the Unknown |
United States of America
| Title | Type |
| UNknown SEOUL | Working Title |
United States of America
| Title | Type |
| Our Unwritten Seoul | English Title |