Skip to content

Animanga Planet

Anime Manga This season Top rated

Search anime and manga

Log in Sign up

Anime Manga This season Top rated

Log in Sign up

Birth: Jun 19
Gender: Male
Years active: 2002-Present
Hometown: Kushiro, Hokkaidou, Japan
Occupation: Mangaka

Home / People

Ryouichi Yokoyama

横山了一

Twitter | Pixiv | Blog

His wife is Mayumi Katou

Works

MOTHER Koushiki Tribute Comic "Pollyanna"

MANGA
★ 4.8

Unmagical Girl

MANGA
Ultraman Koushiki Anthology

MANGA
Sengoku Comiket

MANGA
Manga Senmon Gakkousei no Seishun

MANGA

Animanga Planet

Discover, track, and review anime and manga.

Browse

Anime
Manga
Top anime
Top manga

Site

About
Contact
Terms of Use
Privacy Policy
Cookie Policy

Data

Catalog metadata sourced from AniList. Scores and reviews are by the Animanga Planet community.

© 2026 Animanga Planet

Animanga Planet uses strictly necessary cookies to keep you logged in, cookieless analytics, and, with your consent, advertising cookies from Google. See our Cookie Policy and Privacy Policy.