| iD_ᴇNTITY | |
|---|---|
 Cover of the Tokyopop edition of iD_ᴇNTITY vol. 1 (2005), art by Son Hee-joon | |
| 유레카 Yureka | |
| Genre | |
| Author | Son Hee-joon |
| Illustrator | Kim Youn-kyung |
| Publisher |  Haksan Culture Company |
| English publisher |   Tokyopop  Madman Entertainment |
Other publishers | |
| Original run | 2000–2014 |
| Volumes | 41 |
iD_ᴇNTITY or Yureka (유레카) is a Korean manhwa series created by Son Hee-joon in collaboration with Kim Youn-kyung and distributed by Tokyopop in North America. The series centers on the main character Jang-Gun and his friends along with their virtual reality avatars in the computer game world called "Lost Saga". There are 41 volumes right now, twelve of them have been released in the United States and 34 in France.