Genya is one of the few characters in the series who does not primarily use a sword and is the only Demon Slayer named who cannot use any of the Breathing Styles.
In the simplest terms, the reason that Genya can't use Breathing Styles stems from his inability to achieve the total concentration breathing that other demon slayers use in order to access their abilities.
Genya Safin is a Tailor, a hybrid Grisha who has the power to alter people's appearances.
Due to his brother, Sanemi's criticism and his lack of power, the young and desperate Genya consumes demon flesh in order to become stronger. However, that takes away his ability to use breathing techniques, which is why Genya is unable to master swordsmanship.
In the world of Demon Slayer there are, so far, fourteen breathing styles. All of these styles are used by various members of the Demon Slayers Corp in their long-standing feud with demons.
Yoriichi Tsugikuni is the creator of the Sun Breathing style and is also the strongest demon slayer that has ever lived. He existed nearly 500 years prior to the events of Demon Slayer and struck fear into the hearts of every demon he came across.
Hinokami Kagura, also known as Sun Breathing, is easily one of the strongest Breathing Styles in the series by a wide margin.
But behind his determination to become a Hashira lies a tragic past that drives him to seek redemption and reconciliation with his brother, Sanemi Shinazugawa. In the jaw-dropping storyline, viewers were astounded to witness Genya's transformation as he unveiled his true form—a demon with fangs.
The bullets he uses are made of Scarlet Crimson Iron Sand and Scarlet Ore, allowing him to kill demons without a blade.
Ruin and Rising
Alexander III wants Genya to be beheaded for high treason and murder, while it becomes clear that he raped her. Genya confesses that she poisoned her own skin so that the king would consume it when he kissed and touched her.
(Genya wears white because she's a servant of the Little Palace.)
For a short amount of time, he can become a demon using his bite strength and his special digestive organs." Basically, as a result of his serious gnashers and iron stomach, Genya can devour demon flesh and gain characteristics like the sharpened fangs, frosted tips, and black pupils seen in the most recent episodes.
Demon Slayer's Genya Can Eat Demon Flesh
This allows him to temporarily gain demonic abilities, such as regeneration or heightened strength, making him immortal while in demon form.
The most accurate assumption to make here would be that he cannot perform concentration breathing and improve his breath. This is something that is quite intuitive and the main reason for his inability to perform said techniques is probably because he lacks the natural talent to do so.
Can Demon Slayers Use Multiple Breathing Styles? The only known Demon Slayer who is capable enough to have two Breathing Styles at his disposal is Tanjiro Kamado. He initially started without any knowledge of Breathing Style and had no prior training in swordsmanship.
Inosuke Hashibira
So, when he ended up defeating a demon slayer who was passing through his forest, Inosuke took interest in the art of swordsmanship, but bent it to his own animalistic preferences. Thus, beast breathing was born.
Sanemi – “You call this looking out for you?! Idiot!” Genya's last words to Sanemi before disintegrating, Chapter 179 Th...
Vampiric Trees: After devouring a chunk of Kokushibo's katana, Genya developed a unique Blood Demon Art. It is formed out of his altered double-barreled shotgun which fire flesh cartridges which he can control the path and direction of.
Appearance. Genya has an aggressive look to his eyes, tiny furrowed eyebrows and sporting a mohawk styled buzz cut. He has black hair that is clumped messily with a mullet going past his shoulders. His eyes are slanted inwards and possess small violet colored irises similar to some of the Demons in the anime.
5 Genya Shinazugawa
Genya was killed by the Upper Moon 1, Kokushibo, but not before helping the others take him down. As he was dying, his brother Sanemi regretted how strained their relationship have become, and wept as he begged the heavens to spare Genya.
Why does Genya eat demons? He consumes demon flesh because it allows him to temporarily gain that demon's abilities despite being a human. This is a power that is unique only to him. In the latest episode of Demon Slayer, fans could watch him recite the Amida Sutra.
Genya has some minor infatuation on Sakura Igarashi. He was very extremely jealous of Hikaru Ushijima for having his crush and later he might become suspicious about his business that Hikaru mentioned.