The official website and Twitter account for the upcoming Vampire Dormitory TV anime have announced the addition of three more voice cast members this week. The series is scheduled to premiere in Japan in April 2024, with Crunchyroll streaming the series outside of Japan.
The newly announced cast members (pictured below from left to right) include Wataru Hatano as Komori, Yuusuke Shirai as Takara Kagurazaka, and Yuuki Sakakihara as Juri.

They join a main voice cast that consists of Kana Ichinose as Mito Yamamoto, Shunichi Toki as Ruka Saotome, and Yuuichirou Umehara as Ren Nikaido.
Nobuyoshi Nagayama (Ayaka, Smile Down the Runway, Life Lessons with Uramichi Oniisan) is directing the anime, with Touko Machida (A Playthrough of a Certain Dude’s VRMMO Life, Smile Down the Runway) as screenwriter, and Naomi Tsuruta (NieR:Automata Ver1.1a Episode 7 co-animation director) as character designer. Studio Blanc. is in charge of the animation production.
Ema Touyama’s original manga began serialization in Kodansha’s Nakayoshi on November 2, 2018 and has released 12 tankoubon volumes as of November 2023. The anime adaptation celebrates Nakayoshi’s 70th anniversary and Touyama’s 20th anniversary as a manga creator.

Kodansha USA releases Vampire Dormitory in English and describes the synopsis as:
“I’ll do it! I’ll become your thrall!” A crossdressing girl and an obsessive vampire find themselves entangled in a dangerous relationship. A heart-pounding BL-esque romance drama from the award-winning Ema Toyama (Missions of Love, Aoba-kun’s Confessions)!
Mito, who has no family to rely on, lives on the streets, disguised as a boy. Ruka, a vampire, saves her from a perilous situation and makes her an offer: become his subservient thrall from which he can feed whenever he wants, and she can live with him — in the boys’ dorm. Because her very existence depends on her secret not being found out, every day is a new danger — to say nothing of that vampire! Meanwhile, Ruka, not knowing Mito’s a girl, dotes on her night and day in an attempt to ripen her “disgusting male blood,” but when real feelings develop… this dangerous romance between a crossdressing girl and an obsessive vampire begins!
Source: Vampire Dormitory Official Anime Twitter, Vampire Dormitory Official Website