"Kakaotalk bread" is "카카오빵"(ka-ka-o-ppang) in Korean.
카카오톡 (kakaotalk) is, Korean smartphone messenger application. So, when it become very popular, it made KakaoTalk bread with the character is printed on the package of bread. Release has been started in Korea in July 2014. The package characters drawn sticker sealed, and is gaining popularity.