Beatless

In 2105, with the great advancement of technology, the hIE's (an acronym of humanoid Interface Element) are human-like-robots/androids (the first one was invented in 2057), and were used as public and personal servants for their society. One person, named Arato Endo, a high school student, treats hIEs like equals or humans, and though he wished to buy one, his financial situation hinders him from doing so.

In the middle of a night, while he was returning home from a usual grocery store run, he was violently attacked by the hIE, and the electric-powered car, and he was only seconds before his imminent death, until Lacia, an abnormal hIE equipped with a weaponized coffin, comes to his aid, and saves his life. In the chaos that follows, a hacked electric car was threatening to run them over, and Lacia makes a deal with Arato to assume ownership to her in exchange for calling out to her and saving her life, and that she requires him to take full responsibility of her actions, to which he reluctantly accepts.

After owning Lacia, and bringing her home, Lacia was enjoying her new, peaceful lifestyle, while Arato Endo is about to be dragged into these major events throughout his life, from being hired by the company who hosts an online fashion modeling audition, to being dragged into the fighting between the escaped hIE's from the Memeframe. But within these thrilling events and the thousands of hIE's that were made, there is a hidden mystery... not just when Lacia warns the entranced Arato she, like all hIE's doesn't have a soul... But something more.

Arato Endo (遠藤 アラト, Endō Arato)

Voiced by: Takuto Yoshinaga[2]

Arato is the main protagonist of Beatless, who shows sympathy to hIE's, treating them as humans. As a high school student, he was nearly killed by a hijacked hIE, and an electric car while on his way back home from the grocery store and was saved by Lacia, who he accepted her deal for exchange, becoming his property.

Lacia (レイシア, Reishia)

Voiced by: Nao Tōyama[2]

Lacia is an android/hIE equipped with a bullet-stopping device, and she is a main female protagonist. As a Type-005 Lacia-class, she is one of 5 specialized hIEs who escaped the clutches of the mysterious Memeframe corporation. She becomes Arato's property after saving his life from hijacked electronics (such as an hIE, and an electric car).

Kouka (紅霞, Kōka)

Voiced by: Misako Tomioka[2]

She is a main antagonist of Beatless series, and a supporting character of the anime adaptation. She is Type-001 of Lacia series, and she is among the 5 Lacia-type class hIE's who escaped the Tokyo Research Facility of Memeframe. She is also known as the Crimson Fog.

Snowdrop (スノウドロップ, Sunōdoroppu)

Voiced by: Hiromi Igarashi[2]

A Lacia-series Type-002 hIE and one of 5 specialized hIE's who escaped the facility, she specializes in creating mini-drones, in the form of flower petals that hack other technologies. She is one of the secondary antagonists in the series.

Saturnus (サトゥルヌス, Saturunusu) / Mariage (マリアジェ, Mariaje)

Voiced by: Shino Shimoji[2]

Saturnus, a.k.a Mariage, is a Type-003 Lacia-series hIE, and among the 5 hIE's of the same class to escape from the Memeframe. She is one of the female protagonists. She was owned by Erica Burrows after Saturnus destroyed many hIE's, which proved Burrows worthy of her power.

Methode (メトーデ, Metōde)

Voiced by: Sora Amamiya[2]

Methode is the main antagonist of the series. As a finished model of Type 004-Lacia series, her personality is of manipulative, and ruthless. Her owner is Ryo Kaidai, and she was previously owned by the late Ginga Waterai, and recently Shiori Kaidai.

Ryo Kaidai (海内 遼, Kaidai Ryō)

Voiced by: Kaito Ishikawa[2]

Ryou Kaidai is Arato's classmate, who follows "Lacia-class hIE Escape Incident" with keen interest. He is the eldest son of the founder of Memeframe. He has a younger sister named Shiori Kaidai, and he currently owns a Type-004 Lacia-series, Methode.

Kengo Suguri (村主 ケンゴ, Suguri Kengo)

Voiced by: Daiki Yamashita[2]

A classmate of Arato's he works for the terrorist organization, Antibody Network, after making first contact with a Lacia-class hIE, Kouka. Because of his gentle soul, he is easily swayed and conflicted on whether if he should finish the task in such brutality.

Yuka Endo (遠藤 ユカ, Endō Yuka)

Voiced by: Saki Ono[2]

Yuka is Arato's little sister, and one of the female protagonists of the series. She grows to be fond with Lacia, which Arato brought her into his home after his near-death experience.

Shiori Kaidai (海内 紫織, Kaidai Shiori)

Voiced by: Uki Satake[2]

Ryou's younger sister.

Olga Suguri (村主 オーリガ, Suguri Ōriga)

Voiced by: Yuuki Wakai[2]

Kengo's younger sister.

Erica Burrows (エリカ・バロウズ, Erika Barōzu)

Voiced by: Emiri Sumaya[2]

Higgins (ヒギンズ, Higinzu)

Voiced by: Miyu Irino[2]

Eliza (イライザ, Iraiza)

Voiced by: Minako Kotobuki[2]

Astraia (アストライア, Asutoraia)

Voiced by: Ayahi Takagaki[2]

Kirino (キリノ, Kirino)

Voiced by: Madoka Shiga[2]

• Official website (in Japanese)
• Beatless (novel) at Anime News Network's encyclopedia