Yushiro

Yushiro is a major supporting character in Demon Slayer: Kimetsu no Yaiba. He is a demon who serves as the devoted traveling companion and close ally of Tamayo (the demon doctor), and he later becomes an ally to Tanjiro Kamado and the Demon Slayer Corps.

Originally a human suffering from a terminal illness, Yushiro was transformed into a demon by Tamayo to save his life. He has a distinctive appearance: short stature, pale skin, sharp lavender eyes with slit pupils, and neatly styled short hair that gradients from mint green to black. He typically wears traditional Japanese clothing like a white haori over a light blue-gray shirt and dark hakama.

Personality-wise, Yushiro is hot-tempered, confrontational, and extremely possessive/protective toward Tamayo (whom he calls "Lady Tamayo" and adores deeply). He often acts harsh or rude toward others (especially Tanjiro at first), showing a classic tsundere side—he's aggressive on the surface but loyal and caring underneath, particularly when it comes to those he respects or who help Tamayo.

His Blood Demon Art revolves around invisibility (making himself or objects invisible) and related techniques involving talismans or sight manipulation, which prove useful in key battles. He's one of the few demons not directly created or controlled by Muzan Kibutsuji.