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B: The Beginning

2018 ★ 7.6 2 seasons 18 eps TV-MA

Action & Adventure

Animation

Drama

Crime

Mystery

Sci-Fi & Fantasy

Genius investigator Keith Flick rejoins the royal police force just as serial killer "B" emerges. Mysterious youth Koku may be an ally, or a target.

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Where to watch B: The Beginning

B: The Beginning is available to stream on Nabby via 6 verified sources, aggregated from publicly available embed providers. The action & adventure has 2 seasons and 18 total episodes, rated 7.6/10 by 190 viewers.

Last verified: October 13, 2026 · Source: TMDB

Episodes 18 total across 2 seasons

12 episodes20183 watched

Mar 2, 2018★ 7.5

Keith rejoins the RIS just in time to work a brutal double murder involving "Killer B." Then an unknown group steals a military vehicle for a rampage.

Mar 2, 2018★ 7.7

The RIS investigates a death that appears to be linked to Killer B, though Keith disagrees. Another body leads them to stake out a high-powered party.

Mar 2, 2018★ 7.7

Kaela battles the hackers as the poison gas release ticks closer. Keith drags Boris on a chase outside the city, pursuing Koku and one of the gang.

Mar 2, 2018★ 7.7

Koku and Keith both pay visits to the Royal Library. Afterward, Lily heads to Keith's apartment to discuss her thoughts on the Killer B case.

Mar 2, 2018★ 7.7

The team members grapple with the attack on one of their own, and the fact that there must be a traitor on the inside. Koku realizes who Canopus is.

Mar 2, 2018★ 7.7

After confronting Keith on the roof of the hospital, Koku agrees to meet him at a temple the next day. Keith is declared a murder suspect.

Mar 2, 2018★ 7.7

Minatsuki gives the OK for the others to attack Koku, but Keith intervenes to protect him. The RIS receives an ultimatum.

Mar 2, 2018★ 7.7

Eric implores Keith to return to the RIS, then suspends Lily in an effort to track Keith down. Minatsuki sends Takeru after Koku.

Mar 2, 2018★ 7.7

Keith turns himself in and the RIS decides to spend the few remaining hours laying a trap for the suspected head of Market Maker, using Lily as bait.

Mar 2, 2018★ 7.5

Koku searches for the zeppelin containing Market Maker and Yuna. Meanwhile, Keith, Eric and Kaela frantically search for Gilbert and Lily.

Mar 2, 2018★ 7.7

Keith sets off in pursuit of Gilbert once more. Koku finds the zeppelin and Minatsuki, but Laica escapes with Yuna in accordance with the prophecy.

Mar 2, 2018★ 6.0

The RIS races to the scene, while Keith confronts Gilbert at the old Jaula Blanca facility. Koku fights Laica for his and Yuna's survival.

Frequently asked

How many seasons does B: The Beginning have?

B: The Beginning has 2 seasons with 18 episodes in total.

Is B: The Beginning still on the air?

B: The Beginning has ended and is no longer in production.

What network airs B: The Beginning?

B: The Beginning airs on Netflix.

When did B: The Beginning first air?

B: The Beginning first aired on March 2, 2018.

Cast

Asami Seto

Asami Seto

Lily Hoshina (voice)

Hiroaki Hirata

Hiroaki Hirata

Keith Kazama Flick (voice)

Yuki Kaji

Yuki Kaji

Kokuu (voice)

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