archytele The Vault
Season guide

Mr. Heart: Season 1

8 episodes Premiered Sep 18, 2020 Updated Oct 14, 2026

Despite the fact that things just never seem to go his way, Sang Ha always manages to find a reason to smile. A member of the school track team, Sang Ha loves to run, but distance has never really been his thing. For Sang Ha, sprinting is what brings him the most joy. Jin Won, on the other hand, is exactly the opposite. A record breaking marathon runner in high school, Jin Won is well on his way to becoming a maratho

Season overview

Despite the fact that things just never seem to go his way, Sang Ha always manages to find a reason to smile. A member of the school track team, Sang Ha loves to run, but distance has never really been his thing. For Sang Ha, sprinting is what brings him the most joy. Jin Won, on the other hand, is exactly the opposite. A record breaking marathon runner in high school, Jin Won is well on his way to becoming a marathon superstar. Determined to live up to the expectations of his coaches and colleagues, Jin Won cares about one thing and one thing only: running his next race.

When Jin Won finds himself struggling to maintain his record-breaking stats, his coach suggests Sang Ha step in to help as a pacemaker.

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Season 1 Episodes

Episode Guide

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

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Mytharc (4): Crucial lore & season climaxes
Core (4): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

That Guy's Password

Sep 18, 2020 · 12 min

Jin Won is insulted when his coach assigns him a freshman student to be his pacemaker during training and his upcoming marathon. However, after testing Sang Ha, Jin Won sees his sk

S1·E2 Core

The Day the Crazy Guy Entered My Heart

Sep 25, 2020 · 11 min

After accidentally falling asleep next to Sang Ha, Jin Won sleeps more soundly than he has in years, preparing him well for the next day's marathon. After the race, Jin Won is surp

S1·E3 Mytharc

Password Secret

Oct 2, 2020 · 10 min

Jin Won questions Sang Ha about why his passcode to his door is the same as his passcode. Sang Ha reveals that he went to high school with Jin Won.

S1·E4 Core

Be a Pacemaker

Oct 9, 2020 · 12 min

Sang Ha invites Jin Won on his milk delivery run to train together.

S1·E5 Core

Exercise, not a date? Date, not an exercise?

Oct 16, 2020 · 11 min

Coach Bong takes the training team on an excursion to prepare for their competition. Sang Ha receives a threat from those whom he owes money to.

S1·E6 Core

That Guy's Password

Oct 23, 2020 · 13 min

Jin Won thinks of a way to help Sang Ha with his financial troubles, while still protecting his pride.

S1·E8 Mytharc

Marathon and Love in Common

Nov 6, 2020 · 13 min

What do marathons and love have in common? They can't stop once they start.

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