Immortal Back to High School

It runs 99 short episodes on DramaWave and leans on fantasy and campus tropes, with each episode ending on a hook.

The draw here is a world with its own rules and a lead who learns to bend them. On top of that: rivalries and first love in a school setting.

At roughly 2–4 hours in total, it's quicker to finish than most full-length series.

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