Genya Shinazugawa

제냐는 악마들과 싸우면서 동시에 총을 장전했습니다. 그는 세력이 불공평하다는 것을 알았지만 포기할 생각이 없었습니다.

During Sekido's near fatal attack on Genya, he shed tears of regret when he believed he was about to die without ever getting the chance to properly apologize to Sanemi for his harsh words, only encouraged to push past it when Tanjiro had rescued him and placed his faith onto him. Sanemi's refusal to acknowledge Genya made him insecure as he came to realize just how weak he is compared to his companions. When he recnountering his brother during his section of Hashira Training, he attempts to apolgize and make amends with his brother, but is left demoralized when Sanemi berates him after threatening to kill him.
His desire to reconnect with his brother was so strong that he confesses his habit of eating demons to fight, knowing that the practice was taboo. Nonetheless, he did whatever he could to help his allies, even if it got him horribly maimed in the process, such as shielding Tanjiro from Aizetsu's Blood Demon Art, and playing a pivotal role in the battle against Kokushibo. Despite his brother's harsh rebukes, he bore no ill will towards him, a belief reinforced by Tanjiro and eventually by Sanemi himself.
His abrasive and hostile persona was short-lived, in part due to Tanjiro's influence and camaraderie, and the two would form a deep friendship afterwards. After the attack on the Swordsmith Village, Genya is shown to be a much more pacified and caring individual, giving a warm smile when Tanjiro tearfully reunites with a now sunlight immune Nezuko, inwardly congratulating him for his happiness. Later on, when Sanemi decides to beat up Tanjiro for defending Genya, whom he was also going to beat up, the younger Shinazgawa pleaded with his brother to spare the Demon Slayer.
When he reencounters Tanjiro while he is taking Gyomei's training, Genya thanks him for standing up for him during the incident at Sanemi's dojo before going on to teach him about Repetitive Action, before sharing a laugh at Gyomei's expense.