But the one thing that makes it stand out is how easily it is able to make its fans feel a wide variety of emotional quotes with a simple flashback or a mere few lines of dialogue. It doesn’t matter if the source of said information was a human or a demon– both put forward some very poignant quotes in the series.
10 “Nezuko, Don’t Give In. You’ve Gotta Hang On!!”
This happens in the beginning of the series, when Nezuko turns for the first time. She immediately attacks Tanjiro because she is not in her senses, as her demon instincts are speaking to her.
Tanjiro does not give up on her and utters these words because he still has faith in her. He then starts crying and to his surprise, he sees Nezuko cry as well because she had finally recognized him.
9 “Well Done Tanjiro. I’m Truly Proud.”
As Tanjiro’s sensei, Sakonji Urokodaki is extremely strict with him regarding his Demon Slayer regimen. He can be seen training him under harsh natural conditions and among deadly traps that can kill Tanjiro very easily.
When the boy passes his final test of cutting a massive boulder into two with just his sword, sensei’s impressed. So much so that he showers the boy with a compliment for the first time, making him become emotional.
8 “Please God, Help Him.”
During his Final Selection exam, Tanjiro is able to kill the Hand Demon who had been stuck there since the Meijo period. When his head was severed from his body, he started dying.
However, he could also see Tanjiro hold the demon’s hand to his forehead, and ask for mercy toward him. This is a surprising feat, but is useful since it serves the purpose of establishing Tanjiro’s excessive empathy.
7 "You’re Here! You Came Back Alive!!”
At the beginning of the Final Selection exam, viewers can see many eager youngsters standing on the ground, waiting to clear their exams. By the end, only four children had survived. Witnessing this shocked Tanjiro.
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When he went back to sensei and Nezuko, sensei was relieved but also very surprised to see him back. Nezuko hugged Tanjiro and then sensei hugged the two of them, in what came out to be a surprisingly touching moment from the series.
6 “They Are Not The Hands Of A Boy.”
After Tanjiro had defeated the Swamp Demon in episode 7, he gives Kazumi a portion of his fiancé’s dress as a remembrance. He tries to be kind, but Kazumi is too emotional to think straight and lashes out at Tanjiro, claiming Tanjiro can never know his pain.
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But then he sees Tanjiro’s harsh and weathered hands, which tell him exactly how many unspeakable hardships he’s been through. This makes him— as well as the audience— feel bad for Tanjiro.
5 “Thank You So Much Nezuko.”
After the battle in episode 10, everybody gathers at Tamayo’s house. Nezuko walks towards her and wraps her in a surprise hug. Tanjiro explains that despite her being a demon, Nezuko still sees her as family.
Overcome with emotion, the stoic Tamayo hugs her back while breaking down in tears. They hug for a while, while Yushiro and Tanjiro stand awkwardly, not knowing how to react in such a situation.
4 “I Hate Myself More Than Anything Else.”
In episode 18, viewers get to see flashbacks of Zenitsu’s past. There they see how Zenitsu was always a coward and despite his grandfather being strict with him, he could never change this aspect of his.
After the flashbacks end, Zenitsu rues how he was unable to change that one aspect of his personality. As is his nature , he got extremely emotional and upset over this inability. This showed viewers a rare glimpse of Zenitsu being serious about himself, for once.
3 “Saying It’s Childish If You’re Not Related By Blood – It’s Not True At All!!”
Rui admonishes his demon sister for not being loyal to him because she’s not his actual sister. Tanjiro, who was eavesdropping, comes to the forefront and tells him he’s wrong.
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He explains how a bond is strong because of the closeness people feel, not because of their blood relations. An emotionally charged Tanjiro calls the bond between those demons fake, while the other demon can be seen cowering, crying and begging for her life to Rui.
2 “It Was A Genuine Bond, And That Night I Had Severed It With My Own Two Hands.”
Through flashbacks, viewers get to see how Rui killed his own parents because he was angry with them for wanting to kill his demon self. It was only after killing them that he came to learn his parents were going to kill themselves after, to atone for their sin of killing their child.
Overcome with grief and guilt, Rui can be seen instantly regretting his actions. Even the biggest demon-hating fans could've easily been overcome with emotion upon seeing this scene.
1 “The Bond Between Nezuko And I Can Never Be Severed.”
In one of the best fights of the series, Tanjiro charges at Rui aiming to server his head from his body. While doing so, he angrily rebuts Rui’s desire of having Nezuko as his own sister. Bursting with emotions, Tanjiro, he utters these words while his sword touches Rui’s neck.
