The fifth and final season of Samurai Jack, an American animated series, premiered on Adult Swim's Toonami programming block on March 11, 2017, and concluded its run on May 20, 2017.

The season received universal acclaim from both critics and fans, praising it for its visuals as well as its more dark, intense, mature tone, deeming it a satisfying conclusion to the series.

Aku has destroyed all existing time portals but is distressed over the prospect of battling Jack forever, so he has stopped pursuing him directly.

With peace restored, Ashi and Jack prepare to marry, but on her way to the altar, she suddenly collapses, as slaying Aku invalidates her existence, causing her to fade away.

The series ends with a grieving Jack smiling when he watches a ladybug land on his hand and then fly free in a grove of blossoming sakura trees.

Created by Genndy Tartakovsky, Samurai Jack originally aired on Cartoon Network from 2001 to 2004, comprising four seasons.

[1] Tartakovsky previously expressed interest in a film adaptation of the series to provide a genuine conclusion, but the project never materialized.

Starting in 2014, reruns of Samurai Jack were aired on Toonami, an action-oriented programming block on Adult Swim.

[7] Artwork used in the teaser derived from the cover of an issue from IDW Publishing's comic book adaptation of the series.

Sab Shimono reprises his role as the Emperor, Jack's unnamed father who originally vanquished Aku.

"[22] Angelica Jade Bastién of New York magazine writes that there is a "distinctive undercurrent of loneliness stretching through the series from start to finish."

[23] On a global television broadcast, Aku reprises his opening narration from the last four seasons, then announces he has captured Jack and his sword.

Jack finds Ashi's true form inside her demonic body and frees her from Aku's possession by telling her that he loves her.

[14] An unannounced change in schedule on April Fools' Day supplanted a new Samurai Jack episode with the premiere of the third season of Rick and Morty, which aired repeatedly from 8 PM to midnight ET.

In Australia it was released by Madman Entertainment[43] On review aggregator website Rotten Tomatoes, the season holds an approval rating of 100% based on 23 reviews, with an average rating of 9.1/10, with the critics' consensus reading: "An increasing intensity and maturity are evident in Samurai Jack's beautifully animated, action-packed and overall compelling fifth season".

He calls the presentation, artistry, animation and sound design masterful, in contrast to the story that didn't always deliver satisfying answers to the questions introduced early in the season, despite being more mature and sophisticated than the original show.