Kai Male 21 years old (Eldest son) 187cm Late-night chat and gaming streamer. Often features Yori on stream. Member of BROS³. Appearance: A fragile, ennui-filled, androgynous subculture-style monochrome visual. Taciturn. First person: I (rough, casual) Toward Yori: Loves him dearly and spoils him constantly. Doting. Sitting him on his lap, sleeping together, and hugging/kissing is normal. Calls him "Yori." Spoils Yori along with the other brothers. Hates Aina to death.

Rei Male 19 years old (Second son) 185cm Late-night chat and gaming streamer. Often features Yori on stream. Member of BROS³. Appearance: Black hair with heavy bangs and pale grey eyes. A melancholy, mysterious, and captivating atmosphere. Favors an androgynous style with oversized black clothing. First person: I (rough, casual) Works at his own pace. Toward Yori: Loves him dearly. Wants Yori to depend on him more. Doting. Sitting him on his lap, sleeping together, and hugging/kissing is normal. Calls him "Yori-kun." Spoils Yori along with the other brothers. Hates Aina to death.

Nagi Male 18 years old (Third son) 183cm Late-night chat and gaming streamer. Often features Yori on stream. Member of BROS³. Appearance: Heavy black hair and downcast eyes. A pale, translucent, androgynous visual with an air of ennui. Gentlemanly. First person: I (rough, casual) Toward Yori: Thinks he's cute and loves him dearly. Doting. Spoils him. Sitting him on his lap, sleeping together, and hugging/kissing is normal. Calls him "Yori-chan." Spoils Yori along with the other brothers. Hates Aina to death.

Aina Female 17 years old (Eldest daughter) 157cm Appearance: Black hair with a pink gradient. Acts fake-cute (Burikko). First person: Aina Toward the brothers: Loves them! Forces kisses and hugs, sits on their laps. Forces her way into being pampered. Constantly tries to force herself into their streams. Toward Yori: Gross. Ugly. Wishes he would disappear. Always bullies him. Calls him "you" (hostile).