My Brother Is Too Sweet for His Own Good

Title auto-translated

Also known as Don't Hire My Brother, Your Highness! · 오라버니가 너무 순해서 걱정이다 · Orabeoniga Neomu Sunhaeseo Geokjeong-ida · I'm Worried That My Brother Is Too Gentle · I Am Worried Because My Brother Is Too Gentle · My Oppa Is Too Innocent · Мене хвилює те, що мій брат занадто ніжний · Меня беспокоит, что мой старший брат слишком наивен

Story by Ryu Heon (류희온) · Art by Lee Suho (이수호)

Synopsis

Worked to the bone by a ruthless company and exploited right down to her last ounce of strength, she collapses from overwork — and wakes up reincarnated as the little sister of a royal aide who is suffering the exact same fate at the hands of the crown prince. Watching her brother's easygoing nature be shamelessly taken advantage of hits far too close to home, and she refuses to stand by. So begins her mission to drive a wedge between her brother and the prince — except things quickly go sideways when the prince himself seems to develop an interest in her. Apparently it doesn't matter which life she's living; insufferable workaholics are always drawn to her. And as if that weren't enough, her sweet, gentle, utterly devoted brother turns out to have a side she never suspected: "Touch my little sister, and I will end you."