Love Landed With the Amnesiac Heir

"Lance, an Air Force special-operations officer and heir to the Ashton Family, survives a mission-related plane crash and is rescued by Nora, a small-town doctor. When he awakens, he realizes he has lost his memory. Nora’s adopted sister, Karin, claims credit for Nora’s heroism after finding out who Lance is.

DramaBox released it as 58 bite-size episodes mixing revenge, billionaire and secret identity, made to watch on a phone in one sitting or a few.

The draw here is the slow build to a payback that lands hard. On top of that: the hidden-wealth reveals and the people who misjudged the lead.

At roughly 1–2 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.