Watch ONE: High School Heroes Season 1 Episode 1 Online
“Episode 1” — Watch "ONE: High School Heroes" Season 1 Episode 1 online in HD for free. Check streaming providers, cast, and episode details.
Where can I watch "Episode 1" online?
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Season 1 Episode 1 — Aired on May 30, 2025 • runs about 51 minutes.
Notable cast/guest names in this episode include Lee Jung-ha, Kim Do-wan, Kim Sang-ho, Kim Joo-ryoung.
This page includes 1 official still(s) (when available) plus legal availability links.
Looking for “watch ONE: High School Heroes Season 1 Episode 1 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.
Synopsis
“How are you going to fight tomorrow? It starts tomorrow." After losing the cassette, Ui-Gyeom meets Yoon-Ki and their normal life is shaken up.
Stills
Cast
as Kim Eui-gyeom
as Kang Yoon-ki
as Kim Seok-tae
as Myeong Da-bin
as Nam Seung-Sik
as Sung-Wook
as Lee Ki-Yoon
as Kim Seung-joon
as Lee Geol-jae
as Choi Ki-soo
Episodes – Season 1
Trailer / clip
There�s no trailer available for this series right now.
