Demon Slayer: Protecting Everyone’s Smiles

A mysterious boy with rare talent (though his swordsmanship is terrible) saves Kanae, Shinobu Kocho, and Mitsuri. He becomes a swordsman devoted to protecting everyone’s smiles, and even has a Breathing Style of his own: Star Breathing.

Note: Star Breathing is not a style he invented. Its power is on par with the original Breathing Style.

Muzan: “What? There’s still a successor to Star Breathing?”

Kokushibo: “I never thought that fellow would leave himself a successor.”

Tanjiro: “Huh? Big Brother Yugo, you seem so familiar!”

Zenitsu: “Big Brother Yugo, you have to protect me!”

Inosuke: “You Wu, fight me!”

Nezuko: “Mmm... Mmm... Mmm...” (I love Big Brother Yugo the most.)

Kyojuro Rengoku: “Uma! Little Yugo has great potential!”

Tengen Uzui: “Flashy, so flashy! Not as flashy as me, but I still approve.”

Shinobu Kocho: “He’s a very kind person. I don’t know why I’d fall for someone I dislike.”

Kanae Kocho: “Little Yugo is a wonderful person. He’s great at helping others work through things, and he’s very talented. He’s just not bold enough when it comes to romance. I really like him.”

Giyu Tomioka: “...Little Yugo is very talented.”

Mitsuri Kanroji: “What a heartwarming little brother! So handsome, so strong, and so handsome again. I like him so much.”

Iguro Obanai: “He’s a good person. I feel at ease leaving him with Mitsuri.”

Sanemi Shinazugawa: “He’s very strong.”

Gyomei Himejima: “A good child who knows how to protect others.”