Kumiko "Yankumi" Yamaguchi enters Shirokin High School to become a math teacher. She's assigned as the homeroom teacher for class 2-4, populated by a gang of delinquents.  At first, the class tries everything to rattle her cage, but to no avail. In a short period of time, Yankumi gains the respect of the class. But what the school doesn't know is that she's the heir to the Oedo Group, a powerful yakuzan clan. So while Yankumi struggles to excel in her career as a teacher, she must also keep her yakuza background a secret.<br>
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(Source: Media Blasters)

[Wiki (jp)](https://ja.wikipedia.org/wiki/西村朋紘) | [Wiki (en)](https://en.wikipedia.org/wiki/Tomohiro_Nishimura)

James Carter Cathcart (born January 4, 1954 in West Long Branch, New Jersey), often credited as Carter Cathcart or Jimmy Zoppi, is a American voice actor, bassist and vocalist.
He's best known for voicing Gary in Pokémon as well as James, Meowth and Professor Oak since Season 9. He also is known for voicing Vector in Sonic X.

On April 17th, 2023, he announced on his CaringBridge page that he will be retiring from voice acting and script adapting after Pokémon Journeys: The Series has finished, following his diagnosis with throat cancer in late January 2023.

Fresh out of college, Kumiko "Yankumi" Yamaguchi becomes a math teacher at an all-boys high school. Unfortunately for her, she's assigned by the school board as the homeroom teacher for class 3-D, which happens to be the class of delinquent students. When the class attempts to make a living hell out of Yankumi's career, they fail as her persistence and aggression gain her respect. However, little does anyone in the school know that Yankumi is actually heir to the Kuroda Ikka—one of Tokyo's most powerful yakuza clans.
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(Source: Anime News Network)

Note: Chapter count includes 9 extra chapters in Volumes 9-15

Gonzou Shirakawa