Mikihisa Komaki, like Dojo, is twenty-seven-years-old, is a member of the Library Task Force, and is ranked Library Officer Second Class. He is typically seen smiling or laughing at his coworkers, especially concerning the conversations between Kasahara and Dojo. He is also one of the instructors in the task force. He often gives advice to Dojo or Kasahara in regards to the relationship between them, whether it be on a personal or professional level. He is partly responsible to Kasahara being drafted into the task force.  Komaki smiles a lot and is pretty handsome, resulting in a lot of girls liking him. He once said that he will live a 'straight' life and would never lie about things, as shown in his refusal on participating with Iku's plan to deceive her parents that she is not working in the defense force.   ~!Later on, it is revealed that he decided to live without lying because his childhood friend, Marie, always had such purity and straightness in her actions. He admitted that he has feelings for her, by saying he can no longer see her as a little child anymore.!~

Toshokan Sensou tells the story of Kasahara Iku, the first woman to join the Library Task Force. In the near future in Japan, the Media Enhancement Law has been forced upon the population censoring all books and media. To counter this, the Library Defense Force was created. To protect themselves against the Media Enhancement Law Commission, all major libraries are fully equipped with a military Task Force, who take it upon themselves to protect the books and freedom of media of the people. This anime follows Iku and her fellow soldiers as they protect various special books and artifacts from the oppression of the Media Enhancement Law Commission. A love story, war story, and comedy all rolled into one.

Awards: 
- Most popular voice actor in the Animage Anime Grand Prix (2004)
- Best Supporting Actor at the 1st Seiyuu Awards (2007)

**Non anime roles:**

- Kamisato Ayato - Genshin Impact (Video Game)
- Otto Apocalypse - Honkai Impact 3rd (Video Game)
- Clotted Cream Cookie - Cookie Run: Kingdom (Video Game)
- Phantom - Arknights (Video Game)
- Tatsulot - Kamen Rider Kiva (Tokusatsu series)
- Luocha - Honkai: Star Rail (Video Game)

Iku Kasahara has dreamed of joining the Library Forces ever since one of its soldiers stepped in to protect her favorite book from being confiscated in a bookstore when she was younger. But now that she’s finally a recruit, she’s finding her dream job to be a bit of a nightmare. Especially since her hard-hearted drill instructor seems to have it in for her!
 
(Source: Viz Media)

Kasahara Iku and Dojo Atsushi receive an emergency recall in the middle of their date as Japan is rocked by a terror attack. Their new duty is a protection detail assigned to Touma Kurato, an author. Meanwhile, the relationship between Librarians and the Media Purity Committee is also worsening. 

An unaired episode included in the Toshokan Sensou DVD volume 3, and later on Blu-ray Box (June 8, 2012) that celebrates the airing of Toshokan Sensou: Kakumei no Tsubasa. 
Komaki was arrested for the violation of human rights of his girl friend Marie, who had difficulty in hearing. He was kept in custody and tortured by the Media Improvement Forces. The members of the Task Forces made a desperate effort to rescue him.