It's been 10 years and finally Bleach's Final Arc: Thousand Year Blood War Arc, is Set to release this year and Demon Slayer is Bombing from it's Mind blowing Entertainment District Arc...
So it's High Time let's discuss something Related to both of them...
Today I'm going to point out 10 Similar Things from this Two Shounen Anime Series..
#10. Motivation of Protagonists:
Both Ichigo and Tanjiro became heroes of there respective series because of the death of a their Mother or Family and wanting to save their Family, friends and other innocent people from Monster like Creatures (Demons & Hollows).
They both are Master Swordsman and they both always try to learn new things from their Fights.
They both are much powerful & even surpass many of their characters in their universe but still they both never took high rank title of Hashira or Captain.
#9. Swords:
Zanpakuto and Nichirin Sword has some supernatural Ability to evolve, Like Shikai and Bankai in Bleach and different Breathing syles in Demon Slayer, to achieve this ability you need to train hard.
#8. Gotei 13 and Hashiras:
Both group consists of highest ranking combatants, they use their Powers to defeat Monsters and Save Earth (World of the Living)
Some Similar Characters are as follows:
Blind Member:
• Tosen (Bleach) - Gyomei (Demon Slayer)
Prodigy Member:
• Toshiro (Bleach) - Muichiro (Demon Slayer)
Fire User:
• Yamamoto (Bleach) - Rengoku (Demon Slayer)
#7. Hollows and Demons:
They are Kinda Same, although Hollows can Attack at Night whereas Demons can't due to sunlight but both Hollows and Demons love to attack Humans at Night. That's the reason Hueco Mundo has Endless Night.
A Human can be a Hollow and a Demon, and there is similar way to kill them by cutting down the cervical spine.
They both can Regenerates Quickly but after cutting Cervical Spine they are going to die.
#6. Espadas and Kizukis:
They are the Elite Hollows and Demon Respectively (Villian Group under Antagonist)
They both have Rankings, Kizukis have Rankings in their Eyes while Espadas have their Rankings in any parts of body, if anybody dies they are replaced by other members..
Just like Kizukis are ranked by Upper Moon and Lower Moon, Bleach's Espadas are also ranked like this:
Rank 1 to 4 - Vasto Lorde
Rank 5 to 10 - Espadas Humanoid
#5. Protagonist's Mentor:
Kisuke Urahara and Urokodaki they were the ex Captain and Hashira respectively, who mentor protagonists of their Universes with Difficult Challenges & Sometimes very much Deadly as well but still they love & care for our heroes.
#4. Main Antagonist:
Although Bleach's Ultimate Antagonist is Yhwach from Thousand Year Blood War Arc, but there is a Antagonist which is fan favorite and he's pure evil he's Sosuke Aizen and Muzan Kibitsuji the Ultimate Main Villian of Demon Slayer.
Both of them researched and developed Monsters as Hollowfication process or Demons.
There are both are pure evils and don't hesitate to hurts or even kill their own comrades, Muzan massacre Most of the Lower Moons at the end of Season 1 and Aizen didn't Hesitate to kill Teir Haribel (3rd Espada) and Ichimaru Gin. He even planned to disguise himself as Momo, his Ex Liutenent who admire him a lot and he even tricked many captains which ultimate results in her wounded stage..
#3. Bitter Introduction of Heroes:
In Demon Slayer Hashira Meeting Arc, Tanjiro meeting with other Hashira was not sweet moment rather it was begin with 3 friends tied with rope and then suddenly Wind Hashira "Sanemi Shinazugawa" Attacked Nezuko with this tanjiro fought with demons slayers and they have bad fellings for their team...
Same goes with Bleach Season 2 & 3 is all about infiltrating Shinigami World to save their Friend Rukia, Ichigo fought with 2 Shinigami Captain and 2 Vice Captains and many soliders..
Conclusion: Both of them fought with Hashiras Or Shinigami to protect their loved ones.
#2. Toshiro Hitsugaya and Tanjiro Kamado:
Just look at the above picture, they look way similar when they use there Shikai or Bankai and Any Water Breathing..
This is just a Visual Comparison and nothing more.
Water Breathing visual is not real it's just a illustration, actually no water form or extract from anywhere but in toshiro's case He collects water from atmosphere and Reishi and that's true not only for visual...
#1. Protagonist Took Evil Form:
From the start we saw Ichigo used his Hollow Powers to fight with evils and same thing Happened in Demon Slayer as well.
In the Sunrise Countdown Arc, Muzan injects Tanjiro with all of his blood and he turned into New Demon King but for very few time. For that time period Ichigo and Tanjiro became very similar just like we discussed in hollows & Demon segment
They both can regenerate, both Tanjiro and Ichigo became powerful Demon and Hollow respectively.