Komori is a supporting character in the anime Vampire Dormitory. He is the owner of the cafe La Fraise, a central location in the story, where the character Ruka Saotome works, and he also serves as a butler. Komori typically appears in formal butler attire, including a suit and tie, and has long blonde hair tied in a side ponytail and red eyes. This composed public persona conceals a fundamental secret: he is the Progenitor of the vampires, a being of immense power and authority within the supernatural hierarchy of the series.

Komori's personality reflects a complex duality. Outwardly, he is the dutiful, efficient, and discreet servant dedicated to his duties at the cafe and to Ruka. He embodies the traditional ideals of a butler, remaining calm and collected. Behind this facade lies the consciousness of the Progenitor, an ancient and powerful vampire. His motivations are closely tied to his service to Ruka and the preservation of the secrets surrounding his true identity. He carefully balances his seemingly mundane responsibilities with the weight of being the origin of all vampires.

His most defining relationship is with Ruka Saotome. He acts as Ruka's servant, yet he holds the highest rank among vampires as the Progenitor, creating a unique dynamic where the servant is, in truth, the master of all vampires. This dual role positions Komori as a guardian of secrets and a mysterious figure who operates in plain sight. He interacts with the main cast, including Mito Yamamoto, through the workings of the cafe and the vampire dormitory, often observing and facilitating events without revealing his full nature.

As the Progenitor, Komori possesses abilities befitting his status, including the power of shapeshifting. His development in the narrative is intrinsically linked to his hidden identity and the implications of his presence in the hierarchy of the story. He serves as a silent, powerful pillar of the vampire world, maneuvering from a position of ultimate, yet concealed, strength.