Mamahaha no Tsurego ga Motokano datta:

Mizuto Irido (MC).

Yume Irido (Stepsister).

Akatsuki Minami (Classmate).

Mineaki Irido (Father).

Yuni Irido (Stepmother).

Maki Sakamizu (A classmate, a tall girl with short hair). 

Nasuhana Kanai (A classmate, a Kyoto girl with a sleepy face and bobcut hair).

Maki Sakamizu (Yume's friend and Mizuto's partner in the art class).

Kogure Kawanami (A male classmate who is being cucked by Mizuto).

Yagate Kimi ni Naru: 

Yuu Koito (Mizuto's friend). 

Hyuuga Akari (Yuu's friend).

Kanou Koyomi (Yuu's friend).

Seiji Maki (Mizuto's male friend).

Rei Koito (Yuu's older sister).

Twin Milfs:

Ootake Nami (Mizuto's homeroom teacher).

Hibike! Euphonium:

Reina Kousaka (Classmate and trumpeter).

Oumae Kumiko (A girl he met at the entrance of the school and a euphonium player).

Katou Kazuki (Kumiko's friend and tuba player). 

Kawashima Sapphire (Kumiko's friend and contrabass player). 

Tanaka Asuka (a vice president of the concert band and euphonium player).

Noboru Taki (A concert band club advisor). 

Haruka Ogasawara (A concert band club leader). 

Kaori Nakaseko (A the trumpet section leader and the band accountant).

Saenai Heroine no Sodatekata.

Machida Sonoko (Mizuto's editor).

Utaha Kasumigaoka (A writer).

Kawaii dake ja Nai Shikimori-san.

Miyabi Shikimori (Nami's friend and Mizuto's...).

Miyako Shikimori (The girl who was saved by Mizuto when she was about to fall from the stairs).

Yuu Izumi (A boy who has a crush on Miyako Shikimori). 

Ai Kamiya (A girl who is saved by Mizuto in the library). 

Original.

Akashigata Rinko (An elegant mother from Mizuto's neighborhood. Her appearance is like Ayame Yukieda from Yukionna to Kani wo Kuu).

Raise wa Tanin ga Ii.

Yoshino Somei (A girl whom Mizuto met in Osaka. Even though she is in high school, her face is quite mature, and she is often mistaken as a hostess due to her dress).