The phrase (meaning "all episodes" or "full episodes") suggests that viewers are not looking for a casual watch; they want a marathon experience.
The series stars Lee Kwang-soo as Jo Seok (a struggling webtoon artist), Jung So-min as his girlfriend-then-wife Ae-bong, and Kim Dae-myung as his older brother Jo Joon. Each episode runs about 30–40 minutes, blending slapstick, parody, and meta-humor. The phrase (meaning "all episodes" or "full episodes")
Season 1 of The Sound of Your Heart originally aired with (later re-edited into shorter web versions). However, many streaming sites count the Netflix reboot (2018) as a separate season. The original 2016 KBS sitcom is what most fans refer to as Season 1. Jung So-min as his girlfriend-then-wife Ae-bong