c, here:
"그럼 우리 특별 외전과 시즌 2에서 만나요! 감사합니다. 모스카레토 &amp; 옥동 올림" "Then see you in Season 2 with our special Gaiden! thank you Moscareto &amp; Okdong Olim" However, it looks like the gaiden is only 3 chapters long. Even the comments of the raws want more. T_T

I saw the raws, ending plus side story. Not sure if it was ending of the series of just a season ...