My Sister’s Duty Manhwa also known as (AKA) “동생의 의무 ; 妹妹的义务 ; Sister Duty”. This OnGoing hiperdex was released on 2022. The story was written by Eolluk and illustrations by Keunson. This Manhwa is about Adult, Drama, Romance, Seinen story.
My Sister’s Duty – 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.”