Yamorichan is a Japanese manga artist known for the manga adaptation of the light novel series The Most Notorious "Talker" Runs the World's Greatest Clan. The original story is written by author Jaki, with character designs for the light novel provided by illustrator fame. Yamorichan is credited solely as the artist for the manga version, not as the original creator of the story or characters.

The manga began serialization online on June 12, 2020, and is published through the Comic Gardo platform. As of April 2024, the series has been compiled into nine tankobon volumes released by OVERLAP, with the first volume appearing on October 25, 2020. The manga is licensed for English release by Seven Seas Entertainment, with the first English volume published on April 26, 2022, and subsequent volumes following through at least January 2025. French and traditional Chinese translations have also been published.

The story follows Noel, a young man who aspires to become the strongest Seeker like his heroic grandfather but is assigned the support class Talker, considered the weakest individual combat class. Rather than abandon his ambition, Noel decides to achieve the strongest status by creating and leading the most powerful clan, using manipulation and ruthless tactics to gather strong allies. The narrative has been noted for its antihero protagonist who relies on strategy, information gathering, and psychological manipulation rather than physical strength.

An anime television adaptation was announced on April 21, 2024, produced by FelixFilm and画狂, with direction by Takamura Yuta and scheduled to premiere in October 2024. No other original manga works by Yamorichan are documented in available records.