Pick your Poison!

After discovering her fiancé's infidelity with her own sister, Siyoon faced a tragic demise at their hands, only to awaken 12 years in the past. To her surprise, she finds herself accompanied by Choijoon Yoo, her former love and the man she despised the most. United by a shared desire for vengeance against his family's treachery, the former bully and bullied form an unexpected alliance – a pact of "friends with benefits" bound by the pursuit of revenge.