15WOWOW Prime7.8(8)

Sai

Name: Sai
Genre: Mystery
Released: 2025-04-06
Rating: 7.8

災

Mystery

Watch Free

We checked 8 streaming services in India on 04 Jun 2026 at 15:26 IST

2025

1 Season

6 Episodes

Ended

About

A mysterious man appears before six individuals, each struggling with their own issues, as an impending disaster disrupts their lives, unraveling suspense and psychological tension.

#disaster#conflict#psychological thriller

Cast

Teruyuki Kagawa

as Mysterious Man

Anne Nakamura

as Midori Domoto

Pistol Takehara

as Tsuyoshi Iida

Ryuhei Matsuda

as Shinichiro Kuramoto

Sena Nakajima

as Yuri Kitagawa

Chika Uchida

as Iori Sakiyama

Miyachika Kaito

as Daiki Kikuchi

Jiro

as Fumiya Kishi

Maki Sakai

as Misae Okahashi

Yumi Adachi

as Micchan

Seasons

Season 1

6 episodes2025

Episodes

Season 1

Episode 1

Apr 6, 20251h 0m

Yuri Kitagawa (Sena Nakajima), a high school student studying for entrance exams, spends her days alone, troubled by her tenuous family relationships. Her love life is not going well, and she is struggling to choose her future career due to her family's financial situation. One day, a "certain man" (Teruyuki Kagawa) appears before Yuri. Yuri begins to open up to the man, but soon a terrible "disaster" befalls her.

Episode 2

Apr 13, 20251h 0m

Kuramoto (Matsuda Ryuhei), who works as a mechanic at a transportation company in Fukuoka, has a guilty past. He caused an accident while driving under the influence of alcohol, resulting in the death of someone. Because of that incident, his wife Kana (Sato Miyuki) left him, and Kuramoto, who still has feelings for her, tells his mother-in-law Ikuko (Kamino Misuzu) that he has quit drinking and reformed. Kuramoto faces his own mistakes and tries to move forward little by little. However, a "man" appears before him.

Episode 3

Apr 20, 20251h 0m

Iori (Uchida Chika), a cleaner at a shopping mall, is shy and unable to find hope in life. One day, Iori meets and interacts with Minagawa (Fujiwara Kisetsu), who works at a barbershop in the same shopping mall. Minagawa also has a secret that he cannot tell anyone, and feels a similarity between him and the lonely Iori, and the two of them begin to grow closer. Then, a "man" appears before the two of them.

Episode 4

Apr 27, 20251h 0m

Kishi Fumiya (Jiro) struggles to turn around the hot spring inn left to him by his late father. Meanwhile, Kishi's younger brother Toshiya (Eita Okuno) plots to start a new business by ingratiating himself with local influential figure Sakurai (Hirotaro Honda). The two have a deep-rooted feud over Kishi's ex-wife Akane (Saori), and the rift between Kishi and Toshiya deepens. In the midst of all this, a "man" appears before the two brother.

Episode 5

May 4, 20251h 0m

A residential area near the sea in Kanagawa. The owner of the house, Sawada, died in an unfortunate accident that occurred in the garage of his house. After hearing the story from Sawada's wife Akari (Yamada Maho), Domoto (Nakamura Anne) suspects that it was just an accident and begins an investigation with his junior detective, Kikuchi (Miyachika Kaito). Meanwhile, Iida (Takehara Pistol) tries to find the invisible person involved in the series of suspicious deaths that Domoto is investigating. Then, a "man" appears before them.

Episode 6

May 11, 20251h 0m

Misae (Maki Sakai), a housewife, is invited by her friend Ryoko (Asuka Kurosawa) to start exercising at the public pool, but soon finds out a secret about her husband Kazuhisa (Ryushin Tei). Meanwhile, Domoto and Kikuchi are closing in on the existence of a "man" behind several suspicious deaths that were thought to be unrelated. What is the true identity of the "disaster" that strikes people, and who is the "man"?

Where does Sai rank today?

Sai is #5161 on the CineFlixo Daily Streaming Charts today.

Highest: #5161
Top 10: 0 days
Top 100: 0 days

Watch Sai Online Free — All Episodes in HD

Looking for a place to watch Sai online for free? You've landed on the right page. Sai is a well-rated Japonés mystery series from 2025 that you can stream right now on CineFlixo in high quality, no signup required.

About Sai

A mysterious man appears before six individuals, each struggling with their own issues, as an impending disaster disrupts their lives, unraveling suspense and psychological tension. Across 1 season and 6 episodes, originally airing on WOWOW Prime.

Sai Cast and Characters

The cast features Teruyuki Kagawa (as Mysterious Man), Anne Nakamura (as Midori Domoto), Pistol Takehara (as Tsuyoshi Iida), Ryuhei Matsuda (as Shinichiro Kuramoto), and Sena Nakajima (as Yuri Kitagawa). Their performances are a major reason Sai has built such a passionate audience.

Where to Watch Sai Online

CineFlixo lets you stream Sai 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 Sai Now

Why People Are Watching Sai

There's a reason Sai keeps showing up on "must-watch" lists. What makes it work is tight pacing that earns its twists. 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 Sai

Where can I watch Sai online for free?

You can watch Sai 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 Sai have?

Sai has 6 episodes across 1 season. All episodes are available to stream right here on CineFlixo.

Is Sai good? What's the rating?

Sai holds a 7.8/10 rating based on 8 reviews — well above average.

Who is in the cast of Sai?

The main cast includes Teruyuki Kagawa, Anne Nakamura, Pistol Takehara, and Ryuhei Matsuda, plus a strong supporting ensemble.

Is Sai available in Japonés?

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

When was Sai released?

Sai first aired in 2025.

Do I need an account to watch Sai on CineFlixo?

No. CineFlixo is free and you can watch Sai 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 Sai, check out The Twilight Zone, Century Falls, Ultraman, Station Eleven, and Double Tone: Two Yumi.

Frequently Asked Questions

Where can I watch Sai for free?

You can watch Sai online for free on CineFlixo. All 6 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 Sai have?

Sai currently has 1 season and a total of 6 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 Sai about?

In which language is Sai originally available?

Sai 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 Sai first released?

Sai first premiered on April 6, 2025 (2025). The series has since concluded its run.