X Reader is a term used in secondary creations known as “Yumehon” in Japan. It's a creative genre that depicts interactions between copyrighted characters from manga or games and original characters prepared by the reader (writer).

Depending on the writer, the relationship can vary, such as being depicted as a friendship with an original character or a work depicting a romantic relationship. By introducing original characters that do not originally appear in the work, it is a popular creative genre that can express personalities and behaviors that copyrighted characters do not usually show, without changing the relationship with other copyrighted characters in the same work.

For example! In Tokyo Revengers, this kind of X Reader book is popular!

* When introducing characters, it includes a slight spoiler up to the current anime broadcast. Please be careful!

Sano Manjiro (Mikey) is a young boy who is the leader of the motorcycle gang “Tokyo Manji Kai” that appears in the story, and he has the nickname “Invincible Mikey”.

He is an especially important character in Tokyo Revengers, and is the strongest “delinquent” with overwhelming fighting skills and incredible charisma, who is rated as invincible. His personality tends to be considered cruel from his bold behavior, but he is a character that is innocently good and bad, and is “a delinquent, but not a villain”.

Matsuno Chifuyu is a boy who serves as the vice-captain of the Tokyo Manji Gang's First Division. His characteristic is his two-block hairstyle with blond and black hair, and he deeply respects Baji Keisuke, the captain of the First Division.

His personality is very straightforward, and he shows strong trust in anyone he has once believed in or opened his heart to. His kindness and action have saved the protagonist, Hanagaki Takemichi, many times, eventually leading to a relationship where Takemichi reveals to him that he is time leaping.

Haitani Rindou is a character who appeared only briefly in the main anime.

He was introduced in episode 18 as one of the “charismatic brothers of Roppongi” who can gather more than 100 people with just a shout. As of now, he has not been active in the anime version, but he is set to appear as one of the main characters in the “Tenjiku arc”, which is scheduled to be aired from October 2023.