My Sister’s Duty Manhwa also known as (AKA) “My Younger Sister’s Duty ; Sister Duty ; Dongsaengui Uimu ; 동생의 의무”. This OnGoing webtoon was released on 2020. The story was written by Eolluk and illustrations by Keunson. My Sister’s Duty webtoon is about Drama, Mature, Romance story.
My Sister’s Duty Manhwa – Summary
Dongwoo, who happened to found the secret of his squad leader is spending a hellish day because of it. Jungyeon, the younger sister found out about her brother’s suffering through his diary. To protect her brother whom she loves more than anyone else, Jungyeon visits Yoo Jinho, the squad leader… “Oppa… I’ll protect you this time.”