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Last Summer – S01E03 – The Big Triangle of Summer0:00 / 1:05:47

Last Summer Season 1 Episode 3 – Watch online

« The Big Triangle of Summer »

  • S01E03
  • November 8, 2025
  • 1 h 05 min
  • KBS2

Episode summary

The Patan High School Project reunites the two. Under the Summer Triangle, first love emerges once more as Do-ha reveals his heart to Ha-gyeong.

The legal platforms listed offer the series in the United States; the version (dubbed or subtitled) depends on each service.

Where to stream Last Summer (S01E03)

Subscription
Rakuten Viki
Free with ads
Rakuten Viki

Availability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.

About this episode

“The Big Triangle of Summer” is episode 3 of 12 in season 1 of Last Summer. It first aired on November 8, 2025 on KBS2. It runs 1 h 05 min.

Frequently asked questions

Where to watch Last Summer Season 1 Episode 3 online?

In the United States, Last Summer is available with a subscription on Rakuten Viki, for free with ads on Rakuten Viki (source: JustWatch via TMDB, offers subject to change). The version (dubbed or subtitled) depends on the service.

When did Last Summer Season 1 Episode 3 come out?

It aired on November 8, 2025 on KBS2.

How long is this episode?

Episode S01E03 runs 1 h 05 min.

What is the next episode?

The next episode is S01E04 « The 100th War Has Begun », aired on November 9, 2025.

Series cast

Lee Jae-wookBaek Do-ha / Baek Do-young · 12 ep.Choi Sung-eunSong Ha-kyung · 12 ep.Kim Gun-wooSeo Su-hyeok · 12 ep.Kwon Ah-reumYoon So-hee · 12 ep.Ahn Dong-guOh Seung-taek · 12 ep.Jung Bo-minLee Seul · 12 ep.Choi Byung-moBaek Gi-ho · 12 ep.Jung Hee-taeSong Ji-cheol · 12 ep.Jeon Su-jiKim Ae-jeong · 12 ep.Son Ji-yoonSeo Na-hyeon · 12 ep.Kang Seung-hyunJeon Ye-eun · 12 ep.Ahn Chang-hwanJeon Nam-jin · 12 ep.

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