D-해피버스데이

Original Webtoon:
Naver Series, Bomtoon, Lezhin, KakaoPage, MrBlue, Comico

[Two friends who plan to kill each other]

Ji-seung, who was cursed by the death of his best person every birthday.
Under pressure to become a murderer, he decides to become an optional murderer and becomes friends with the murderer.