Alternative Name:If You Lay a Hand on My Brother, You're All Dead; If You Mess With My Brother, I Will Kill You; If You Touch My Brother, You're All Dead; If You Touch My Little Brother, You're All Dead; I’ll Kill You All If You Mess With My Brother; You're All Dead If You Mess With My Brother; 敢动我弟弟的话，你们就死定了; 내 동생 건들면 너희는 다 죽은 목숨이다

Genre(s): Fantasy Romance WebtoonsComedy

Demographic:Shoujo

Summary:
One day, I woke up as Rosalite, the older sister of Asterion in the novel, Asterion of the Twilight. I may not be the main character, but it's not so ... MORE One day, I woke up as Rosalite, the older sister of Asterion in the novel, Asterion of the Twilight. I may not be the main character, but it's not so bad. Rosalite's little brother, though, is fated to die in the story at 18 and that just seems really unfair after all the drama he's been through (did I mention his story is a BL?). HIDE