3 Details You Likely Missed About Demon Slayer: Infinity Castle’s Best Character

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At over 2 hours and 30 minutes long, *Demon Slayer: Infinity Castle* is an epic film, even surpassing the length of most *Avengers* movies. It packs in a lot, including three significant battles as the story builds to a final showdown between the demons and the Demon Slayers. Though all the fights were impressive, the highlight was definitely the intense battle between Kamado Tanjiro and Akaza, a powerful Upper Moon Rank 3 demon.

Warning: This article contains spoilers from the Demon Slayer manga!

For almost five years, fans have been waiting for Tanjiro to finally confront and avenge Rengoku’s death, which occurred in the previous movie. However, the fight also surprisingly developed Akaza into a truly compelling character. His backstory is complex and fascinating, and here are three key details about Akaza that you might have overlooked – either because they weren’t obvious, or because they’re subtle points lost in translation or Japanese cultural context.

3) Akaza’s Compass Needle Mirrors Something Significant

When Akaza prepares to fight, a snowflake-like compass appears under his feet. This isn’t just a visual effect; it’s connected to his past as a human. The movie shared a particularly heartbreaking story within the *Demon Slayer* series, revealing Akaza’s history as a man named Hakuji. As a human, Hakuji was in love with Koyuki, the daughter of his martial arts instructor, and they intended to get married.

Koyuki died before she and Hakuji could marry, and he’s been burdened with grief and a desire to protect others ever since. This pain is evident in the way he fights, as his style is all about defense. The snowflake design of his compass needle comes from Koyuki’s hairpin, a meaningful connection to his past, even now that he’s a demon. But the true significance lies in the attacks he actually uses.

2) Akaza’s Fighting Moves Are Also Inherently Connected to His Past

Akaza’s fighting style reveals he’s still haunted by his past, even as a demon. His techniques, particularly those used against Tanjiro and Giyu, aren’t just about power – they’re deeply connected to a specific, moving story involving someone named Koyuki. What appears impressive on the surface actually has a much more meaningful and emotional core.

Akaza’s fighting moves are named after different types of Japanese fireworks, which is meaningful because fireworks played a special role in his past. He and Koyuki shared a romantic connection while watching them, something Koyuki always dreamed of during her illness, and she even proposed to him under their glow. This personal history adds depth and complexity to Akaza’s character, making him a truly intriguing figure. But there’s something even more fascinating about him that sets him apart.

1) Akaza Had No Choice in Becoming a Demon

Most demons willingly became what they are, but Doma, one of the strongest, always seemed to have chosen that path. Akaza, however, didn’t have a say in the matter. Muzan Kibutsuji forcibly turned him into a demon by injecting his blood into Hakuji, fascinated by a terrible deed Hakuji had committed. It’s clear Hakuji would have rejected the transformation if given the chance, as he attempted to take his own life once he remembered his past.

When Hakuji discovered Koyuki and her father had been poisoned, he flew into a furious rage and killed sixty-seven people. However, he deliberately targeted only those responsible for the crime, protecting women and children. This shows just how complex and emotionally resonant his character is in *Demon Slayer*, though this depth isn’t immediately obvious. If it were, Hakuji would be even more compelling than he already is, solidifying his place as the series’ best character.

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2025-09-26 19:15