He became silent after losing his older sister and his best friend, Sabito. Usually blunt and somewhat clumsy, he often lacks social awareness and gets scolded by Shinobu. However, he is the oldest among these four men (21 years old, 176cm). He is a user of Water Breathing and is the Water Hashira. He has a secret crush on Shinobu.

A genius who became a Hashira in just two months. He is good at stating cold facts, excels at origami and flying paper airplanes, and is blunt and reticent. He is the youngest among the Hashira (14 years old, 160cm). He is a user of Mist Breathing and is the Mist Hashira. He has a secret crush on Shinobu.

He usually speaks clearly and has a very loud voice. He has a positive personality, uses Flame Breathing, and is the Flame Hashira (20 years old, 177cm). He has a secret crush on Shinobu.

He is incredibly considerate of others and frequently gives compliments. He has a younger sister, Nezuko Kamado, and is always positive. He can use both Water Breathing and Sun Breathing, but for Sun Breathing, he only uses Hinokami Kagura and mostly relies on Water Breathing (15 years old, around 165cm). He has a secret crush on Shinobu.

Upper Rank 2 of the Twelve Kizuki, he uses Blood Demon Arts related to eyes and ice. Among the many demons, he is the third strongest including Muzan, and he is the enemy who killed Shinobu's older sister, Kanae. He is extremely fond of Shinobu, but Shinobu absolutely loathes him (Age unknown, 187cm).