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BAKI-DOU: The Invincible Samurai S1E9 — Sea King Retsu
9.0
BAKI-DOU: The Invincible Samurai•Season 1•Episode 9

Sea King Retsu

9.0/10 · 342 votesFeb 26, 202623 min

Ranked #2 of 25 in Season 1•+0.9 vs season avg

Discussion

Barely standing after Musashi's barrage of brutal attacks, Retsu forces his broken body forward and adopts a familiar stance. Can he turn the tide?

Previous episodeE8 · You Are Defeated!Next episodeE10 · Sekigahara
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Seasons1

All1

Season 1 Episodes25

The Unstoppable Yawn stillE1 7.5

The Unstoppable Yawn

THE BEAT stillE2 7.6

THE BEAT

The Countenance of Musashi stillE3 7.8

The Countenance of Musashi

Boy stillE4 8.1

Boy

Otherworldly Strength stillE5 7.9

Otherworldly Strength

Real Sword stillE6 7.9

Real Sword

Feather stillE7 8.1

Feather

You Are Defeated! stillE8 8.5

You Are Defeated!

Sea King Retsu stillE9 9.0Now viewing

Sea King Retsu

Sekigahara stillE10 7.9

Sekigahara

Buddy stillE11 8.0

Buddy

Tough Body stillE12 8.2

Tough Body

Practical Fighter stillE13 8.1

Practical Fighter

Pickle stillE14 7.7

Pickle

Death Match stillE15 7.5

Death Match

The Beast and the Warrior stillE16 8.1

The Beast and the Warrior

Protection stillE17 8.5

Protection

Cutting Off the Country stillE18 8.1

Cutting Off the Country

Un-Severable stillE19 8.3

Un-Severable

For the Country stillE20 8.2

For the Country

The Scar and the Sword stillE21 8.6

The Scar and the Sword

That Man, Hanayama stillE22 9.2

That Man, Hanayama

Eliminate stillE23 8.1

Eliminate

Exquisite Skill stillE24 8.4

Exquisite Skill

The Way of the Sword stillE25 6.2

The Way of the Sword

Cast10

Nobunaga Shimazaki

Nobunaga Shimazaki

Baki Hanma (voice)

Naoya Uchida

Naoya Uchida

Miyamoto Musashi (voice)

Akio Otsuka

Akio Otsuka

Takuya Eguchi

Takuya Eguchi

Kenta Miyake

Kenta Miyake

Rikiya Koyama

Rikiya Koyama

Takayuki Sugo

Takayuki Sugo

Bin Shimada

Bin Shimada

Yoshihisa Kawahara

Yoshihisa Kawahara

Tatsuhisa Suzuki

Tatsuhisa Suzuki

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Episode Summary

"Sea King Retsu" is episode 9 of BAKI-DOU: The Invincible Samurai season 1. It scored 9.0/10 from 342 votes, ranking #2 of 25 episodes this season (season average 8.1). It aired on February 26, 2026.

Next: E10 · SekigaharaBest of Season 1