Serialization Info

Service languages

• Korean4

Korean4 platformsCurrent language

Mr.Blue

Mr.Blue02/10/2015

• 오래된 비밀02/10/2015

Kakaopage

Kakaopage07/30/2019

• 오래된 비밀07/30/2019

AnyToon

AnyToon02/24/2021

• Current오래된 비밀02/24/2021
• 오래된 비밀09/13/2021

Naver Series

Naver Series11/25/2014

• 오래된 비밀 [단행본]11/25/2014