The Diamond Sleeping in the Sea backdrop

TBS8.9(7)

The Diamond Sleeping in the Sea

Name: The Diamond Sleeping in the Sea
Genre: Drama
Released: 2024-10-20
Rating: 8.9

海に眠るダイヤモンド

Drama

Watch Free

We checked 8 streaming services in India on 04 Jun 2026 at 08:39 IST

2024

1 Season

10 Episodes

Ended

About

Set on Hashima Island in Nagasaki Prefecture during the coal industry's rise in 1955, this story follows themes of family, friendship, and love. It contrasts the post-war era, where people had little but were full of dreams, with present-day Tokyo, where abundance prevails, but young people struggle to find their dreams.

Cast

Ryunosuke Kamiki

as Teppei / Reo

Takumi Saitoh

as Shinpei Araki

Hana Sugisaki

as Asako

Tao Tsuchiya

as Yuriko

Elaiza Ikeda

as Rina

Tomoko Nakajima

as Haru

Mirai Yamamoto

as Sumiko

Nobuko Miyamoto

as Izumi

Hiroya Shimizu

as Kensho

Jun Kunimura

as Ippei

Ikki Sawamura

as Tatsuo

Masashi Sada

as Priest

Hiroto Oshita

Seasons

Season 1

10 episodes2024

Episodes

Season 1

See all 10episodes →

Where does The Diamond Sleeping in the Sea rank today?

The Diamond Sleeping in the Sea is #2946 on the CineFlixo Daily Streaming Charts today.

Highest: #2946
Top 10: 0 days
Top 100: 0 days

Watch The Diamond Sleeping in the Sea Online Free — All Episodes in HD

Looking for a place to watch The Diamond Sleeping in the Sea online for free? You've landed on the right page. The Diamond Sleeping in the Sea is a highly acclaimed Japonés drama series from 2024 that you can stream right now on CineFlixo in high quality, no signup required.

About The Diamond Sleeping in the Sea

The Diamond Sleeping in the Sea Cast and Characters

The cast features Ryunosuke Kamiki (as Teppei / Reo), Takumi Saitoh (as Shinpei Araki), Hana Sugisaki (as Asako), Tao Tsuchiya (as Yuriko), and Elaiza Ikeda (as Rina). Their performances are a major reason The Diamond Sleeping in the Sea has built such a passionate audience.

Where to Watch The Diamond Sleeping in the Sea Online

CineFlixo lets you stream The Diamond Sleeping in the Sea online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.

▶ Watch The Diamond Sleeping in the Sea Now

Why People Are Watching The Diamond Sleeping in the Sea

There's a reason The Diamond Sleeping in the Sea keeps showing up on "must-watch" lists. What makes it work is emotional weight that hits where it counts. If you enjoy Japonés storytelling that doesn't follow the same tired beats, this is the kind of show you'll end up recommending to friends.

Frequently Asked Questions about The Diamond Sleeping in the Sea

Where can I watch The Diamond Sleeping in the Sea online for free?

You can watch The Diamond Sleeping in the Sea online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.

How many episodes does The Diamond Sleeping in the Sea have?

The Diamond Sleeping in the Sea has 10 episodes across 1 season. All episodes are available to stream right here on CineFlixo.

Is The Diamond Sleeping in the Sea good? What's the rating?

The Diamond Sleeping in the Sea holds a 8.9/10 rating based on 7 reviews — genuinely excellent.

Who is in the cast of The Diamond Sleeping in the Sea?

The main cast includes Ryunosuke Kamiki, Takumi Saitoh, Hana Sugisaki, and Tao Tsuchiya, plus a strong supporting ensemble.

Is The Diamond Sleeping in the Sea available in Japonés?

Yes — The Diamond Sleeping in the Sea was originally produced in Japonés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.

When was The Diamond Sleeping in the Sea released?

The Diamond Sleeping in the Sea first aired in 2024.

Do I need an account to watch The Diamond Sleeping in the Sea on CineFlixo?

No. CineFlixo is free and you can watch The Diamond Sleeping in the Sea without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.

Similar Series You Might Like

If you enjoyed The Diamond Sleeping in the Sea, check out Class of Cheaters, Watashi no Machi no Chiba-kun wa., Anata no Soba de Ashita ga Warau, FM999: 999 WOMEN'S SONGS, and Taking in a Stray.

Frequently Asked Questions

Where can I watch The Diamond Sleeping in the Sea for free?

You can watch The Diamond Sleeping in the Sea online for free on CineFlixo. All 10 episodes across 1 season are available to stream in HD without a subscription, signup, or paywall. Just open the show page and press play.

How many seasons and episodes does The Diamond Sleeping in the Sea have?

The Diamond Sleeping in the Sea currently has 1 season and a total of 10 episodes. The series status is "Ended", so the episode count may grow as new seasons are released. You can browse the full episode list on CineFlixo and continue watching from where you left off.

What is The Diamond Sleeping in the Sea about?

In which language is The Diamond Sleeping in the Sea originally available?

The Diamond Sleeping in the Sea was originally produced in JA. On CineFlixo the show is available in its original JA audio. Check the player options on the watch page for available subtitle tracks.

When was The Diamond Sleeping in the Sea first released?

The Diamond Sleeping in the Sea first premiered on October 20, 2024 (2024). The series has since concluded its run.