The Day Before Revenge

invites Kelly to a bachelorette party at a bar. After enduring their bullying for years, Leonard snaps upon hearing their plan and stops Kelly from going to the party. In the end, Lila attends the party alone and,unfortunately, is killed by foreigners. Unable to cope with Lila’s death, Kelly blames Leonard and takes revenge by making him suffer for a whole year.

It runs 23 short episodes on DramaBox and leans on revenge tropes, with each episode ending on a hook.

The draw here is the slow build to a payback that lands hard.

The whole series takes about 28–51 minutes, so it's an easy binge.

Start from episode 1 below; autoplay takes you to the next episode when one ends, and nothing needs a sign-up.