Akutagawa Ryunosuke.

Akutagawa has a thin build and very pale skin on his face. His whole body was like a rabbit's, only his face was like a human's. He has short, curly black hair with slanting bangs, floppy ears reaching to his chin and graying at the tips. He has sharp, slightly baggy eyes of a dark gray color.
He wears a black coat on his furry body. under his coat he has a white shirt trimmed with a multi-layered corrugated fabric. He also wears a white frill.
The character is calm, grumpy, affectionate with Atsushi.

Atsushi has light gray hair, pale skin, and is of medium height and slim build. It also has the entire body of a rabbit, except for the human face. He has segmental heterochromia, consisting of purple in the upper half of the iris and yellow in the lower part of the pupil. He has short hair, combed forward in loose strands, with a long strand left on the right side of his face. This uneven hairstyle is the result of bullying he has been subjected to by other hosts before. In addition, he has a noticeable black streak in his hair.
He wears a shirt and short pants with suspenders for a rabbit. Also a small tie.
He is calm by nature, but more playful and active. Affectionate with Ryunosuke.

Neither of them can speak, only rabbit.
Ryunosuke loves Atsushi.