The latest season of Demon Slayer definitely delivered in terms of animation, just like the past seasons. Studio Ufotable is certainly making its mark as one of the best animation studios as of late. The last episode of the Hashira Training Arc was simply a cinematic masterpiece.
However, what caught the intrigue of fans was the relationship between Kagaya Ubuyashiki and his wife Amane Ubuyahiki. So here is a little bonus detail on how the marriage between Kagaya and Amane came about.
Unveiling the Shocking Reason Behind Amane’s Marriage to Young Kagaya

For the anime-only fans, the manner of Kagaya Ubuyashiki’s death was certainly something that had them stunned. Especially given how he sacrificed his family along with himself to weaken Muzan enough for the Hashiras to finish the Job. But what was even more stunning was Amane Ubuyashiki, the wife of Kagaya having no regret in staying with her husband while he blew the entire Estate along with his family to weaken Muzan.
Before Kagaya Ubuyashiki blew the Ubuyashiki Estate along with Muzan, he went on to reveal that he and Muzan shared the same ancestral line. He also revealed that their bloodline was cursed due to them bringing a demon into the world. The curse supposedly was the cause of all the children from the Ubuyashiki line being born frail and not surviving long.
This is the end of the thread, Thank you for reading👺⚔️
I have many bonus this time
Bonus 1: amane and kagaya relationship explained pic.twitter.com/AZD8y6TiJb
— Tan 🙂 (@4Tanji) July 1, 2024
However, marrying a priest would extend the lifeline of the children. This is how Kagaya came about to marry Amane. Amane was 17 years old when she married Kagaya who was 13 years old at the time. Despite the age difference, Kagaya was mature for his age, which gave him a better understanding of the situation. Understanding and being considerate of Amane’s situation was what ultimately made her decide to marry him.

Amane’s love and care for Kagaya is probably the reason he lived long enough to die at his own expense. And she was willing enough to sacrifice herself for the sake of defeating Muzan. Their sacrifice would go on to prove to be crucial in defeating Muzan in the future of Demon Slayer.
Why the sacrifice of the Ubuyashiki family played the most vital role in the downfall of Muzan in Demon Slayer

Despite facing a chronic illness, Kagaya Ubuyashiki remained the leader of the Demon Slayer Corps. He understood better than anyone what it would take to be on the winning side of defeating Muzan in the future, even if it meant sacrificing the lives of his family.
We could see that he had an unwavering belief that the Demon Slayer Corps would one day fulfill the battle that he and his ancestors had been fighting for nearly a millennium. His faith in the Demon Slayer Corps as well as the support of his wife was probably the reason why we could see him be courageous in front of Muzan himself.
Before he ended up taking his own life, we could see him explain how crucial his sacrifice would be for the fight to come. Given the love that the Hashiras have for him, he knew that his death would serve as fuel for their bloodlust against Muzan.
Though the anime has yet to reveal the full extent of the abilities of the Ubuyashiki family, we could get a hint that Kagaya Ubuyashiki had the power of foresight from his conversation with the Stone Hashira. This ability is also what led to Kaguya setting a trap for Muzan as he had predicted his arrival beforehand.
You can stream Demon Slayer on Netflix and Crunchyroll.
Frequently asked questions
Why did Amane marry Kagaya Ubuyashiki when he was only 13 in Demon Slayer?
In Demon Slayer, the Ubuyashiki bloodline was cursed, causing its children to be born frail and die young. Marrying a priest was believed to prolong the lifespan of children born to the family, and this is the reason given for the union. Amane was 17 and Kagaya was 13 at the time; despite the age gap, Kagaya’s maturity and his consideration for Amane’s situation are what led her to accept the marriage.
Why is the Ubuyashiki family said to be cursed in Demon Slayer?
Before his death, Kagaya reveals that the Ubuyashiki bloodline shares the same ancestral line as Muzan Kibutsuji, the first demon. The family is said to be cursed for having brought a demon into the world, which is why its children are born sickly and short-lived. Leading the Demon Slayer Corps to destroy Muzan is the family’s way of atoning for that curse.
How did Kagaya and Amane Ubuyashiki’s sacrifice help defeat Muzan in Demon Slayer?
Kagaya, who led the Demon Slayer Corps despite chronic illness, blew up the Ubuyashiki Estate with himself and his family to weaken Muzan and lure him out for the Hashira. Amane stayed at his side without regret. The article also notes Kagaya appeared to have a power of foresight, which let him predict Muzan’s arrival and set the trap that made the family’s sacrifice pivotal to Muzan’s eventual downfall.







