Itsuki's editor at GF Bunko. He and Itsuki seem like they don’t get along well at first, but they are actually very close. He's normally seen nagging Itsuki and/or Setsuna about their deadlines.

The story follows the everyday life of Itsuki, a novelist and "modern day Pygmalion" who works day in and day out to create the ultimate younger sister. He's surrounded by various other characters: a beautiful genius writer who loves him, his big-sisterly classmate from college, a fellow male writer, a sadistic tax accountant, and his editor. They're all looked after by Itsuki's perfect younger step-brother, Chihiro, who has a serious secret. 
 
(Source: Anime News Network) 
 
Note: The first episode received an early screening at a special event held at Shinjuku Piccadilly, Tokyo on 06.09.2017.

__Hobbies:__ cooking, music, singing

[Website](http://www.artsvision.co.jp/talent/779/) | [Twitter](https://twitter.com/toriumi_kohsuke)

__Non-anime roles:__
~!Akira in "Togainu no Chi" (VG) (Japanese)
Alfred in "Mōjū-tsukai to Ōji-sama ~Flower & Snow~" (VG) (Japanese)
Anthopper Imagin Ari in "Kamen Rider Den-O" (Voice) (Japanese)
Archer (Robin Hood) in "Fate/Extra CCC" (VG) (Japanese)
Archer (Robin Hood) in "Fate/Extra" (VG) (Japanese)
Atsushi in "Yandere Heaven Vol. 1" (Drama CD) (Japanese)
Berserker (Asterios) in "Fate/Grand Order" (VG) (Japanese)
Blacky (Umbreon) in "Pokémon Mystery Dungeon: Magnagate and the Infinite Labyrinth" (Web Anime) (Japanese)
Broca in "Arknights" (VG/Mobile) (Japanese) 
Buffalo Lord/Taurus Ballista in "Kamen Rider Decade" (Voice) (Japanese)
Carl Ernst Kraft in "Dies irae 〜Interview with Kaziklu Bey〜" (VG) (Japanese)
Charlie Nash in "Street Fighter V" (VG) (Japanese)
Chouei in "Sangoku Rensenki Sakigake" (PCG) (Japanese)
Choujiro Momochi in "Hyakka Hyakurou Sengoku Nippon-chou" (VG) (Japanese)
Démigra in "Dragon Ball Xenoverse" (VG) (Japanese)
Eikichi Mishina in "Persona 2: Eternal Punishment" (VG) (Japanese)
Eikichi Mishina in "Persona 2: Innocent Sin" (VG) (Japanese)
Endorph in "Soul Cradle: Sekai wo Kurau Mono" (VG) (Japanese)
Fei Long in "Street Fighter Alpha 3" (VG) (Japanese)
Futsunushi in "Ichibanketsu Online" (VG) (Japanese)
Gordeau in "UNDER NIGHT IN-BIRTH" (VG) (Japanese)
Grayarts in "Erementar Gerad: Limited Edition Manga Volume 18 Drama CD" (Drama CD) (Japanese)
Heath in "Luminous Arc" (VG) (Japanese)
Hector in "Fire Emblem Heroes" (VG) (Japanese)
Hibari Agumo in "Kuro Yoshiwara Melancholia Vol 1: Agumo Hibari" (Drama CD) (Japanese)
Hiruma Takeru in "Nikushoku Danshi ni Koi wo Suru" (Smartphone Game) (Japanese)
Hiyama Hiroyuki in "Non-Fiction Series Doukyou CD" (Drama CD) (Japanese)
Hong Yun-seong in "Soul Calibur II" (VG) (Japanese)
Hong Yun-seong in "Soul Calibur IV" (VG) (Japanese)
Hong Yun-seong in "Soul Calibur: Broken Destiny" (VG) (Japanese)
Isami in "Shironeko Tennis" (VG) (Japanese)
Julio Asuka Misurugi in "Cross Ange: Tenshi to Ryū no Rondo tr." (VG) (Japanese)
Junpei Iori in "Persona 3" (VG) (Japanese)
Junpei Iori in "Persona Q: Shadow of the Labyrinth" (VG) (Japanese)
Juris Grunden in "Atelier Ayesha ~Tasogare no Daichi no Renkinjutsushi~" (VG) (Japanese)
Kaeya in "Genshin Impact" (VG) (Japanese)
Kagiha in "Kurocho no Psychedelica" (VG) (Japanese)
Kalas in "Baten Kaitos" (VG) (Japanese)
Kanda Ryoutarou in "BareSuta Second" (Drama CD) (Japanese)
Kanda Ryoutarou in "BareSuta Third" (Drama CD) (Japanese)
Kenshin Uesugi in "Senkoku Knight Blood" (VG) (Japanese)
Kiyotaka Ishimaru in "Danganronpa: Kibō no Gakuen to Zetsubō no Kōkōsei" (VG) (Japanese)
Kousuke Miyata in "I/O" (VG) (Japanese)
Kouta Morisaki in "Otaku no Musume-san" (Drama CD) (Japanese)
Kuroda in "Ohsama Sentai King-Ohger" (Voice) (Japanese)
Kurtis in "Makai Senki Disgaea" (VG) (Japanese)
Kyouragi Takashi in "Tenshou Gakuen Gekkouroku" (VG) (Japanese)
Kyoya Date in "Tokimeki Restaurant" (VG) (Japanese)
Lawrence in "Haitaka no Psychedelica" (VG) (Japanese)
Li Dian in "Dynasty Warriors 8" (VG) (Japanese)
Little Mac in "Super Smash Bros. for Nintendo 3DS / for Wii U" (VG) (Japanese)
Marquis de Lafayette in "Bara ni Kakusareshi Verite" (VN) (Japanese)
Masato Arakawa in "Ryū ga Gotoku 7: Hikari to Yami no Yukue" (VG) (Japanese)
Merry in "Yuugen Romantica Hatenkou: Dai Go no Nazo - Merry-san Merry" (Drama CD) (Japanese)
Merry in "Yuugen Romantica Uchouten: Dai Go no Nazo - Merry-san Merry" (Drama CD) (Japanese)
Mikazuki Munechika in "Touken Ranbu" (browser game) (Japanese)
Mitsui Kazuya in "Endless 6 Feel" (drama cd) (Japanese)
Morinaga Tetsuhiro in "Koi Suru no Boukun 1" (Drama CD) (Japanese)
Morinaga Tetsuhiro in "Koi Suru no Boukun 2" (Drama CD) (Japanese)
Murasaki in "Phantom Brave" (VG) (Japanese)
Nakagami in "Jounetsu no Young Man" (BLCD) (Japanese)
Naoki Kousaka in "Zettai Zetsumei Toshi 3 -Kowareyuku Machi to Kanojyo no Uta-" (VG) (Japanese)
Narcian in "Fire Emblem Heroes" (VG) (Japanese)
Narimasa Sassa in "Hana Oboro ~Sengoku-den Ranki~" (VG) (Japanese)
Otojirou Kawakami in "Meiji Tokyo Renka: Full Moon" (VG) (Japanese)
Phoenix Wright/Ryuichi Naruhodo in "Ultimate Marvel vs Capcom 3" (VG) (Japanese)
Poyopoyo/Shiki in "Period Cube ~Torikago no Amadeus~" (VG) (Japanese)
Rei Mikuni in "CollarxMalice" (VG) (Japanese)
Saitou Hajime in "Hakuoki Shinsengumi Kitan" (VG) (Japanese)
Saitou Hajime in "Hakuoki Zuisouroku" (VG) (Japanese)
Sakamaki Shuu in "Diabolik Lovers Blood & LoveSweat" (Drama CD) (Japanese)
Sakamaki Shuu in "Diabolik Lovers MORE,BLOOD" (VG) (Japanese)
Sakamaki Shuu in "Diabolik Lovers VERSUS 1 Ayato VS Shu" (Drama CD) (Japanese)
Sakamaki Shuu in "Diabolik Lovers ~Haunted Dark Bridal~" (VG) (Japanese)
Saku Takizawa in "Gakuen Club" (VN) (Japanese)
Satsuki Shindō in "Happy Cafe" (drama CD) (Japanese)
Sengoku Kiyosumi in "Prince of Tennis Perfect Live"
Shibata Sou in "Rin!" (Drama CD) (Japanese)
Shino Inuzuka in "Lord of Vermilion IV" (VG) (Japanese)
Shun Nanase in "VitaminX" (VG) (Japanese)
Souseki Natsume in "Bungou to Alchemist" (VG) (Japanese)
Sports Maxx in "JoJo's Bizarre Adventure: Eyes of Heaven" (VG) (Japanese)
Strider Hien in "Namco X Capcom" (VG) (Japanese)
Strider Hien in "Strider 2" (VG) (Japanese)
Strider Hiryu in "Strider 2" (VG) (Japanese)
Strider Hiryuu in "Namco X Capcom" (VG) (Japanese)
Suzukaze in "Issei Fuubi -Gyakuten Oo’oku Koi Emaki- Vol 1. : Suzukaze" (Drama CD) (Japanese)
Tadaomi Karasuma in "Ansatsu Kyōshitsu" (VOMIC) (Japanese)
Tankenstein in "Power Rangers In Space" (Japanese Dub) (Japanese)
Walnut in "Phantom Brave" (VG) (Japanese)
Wedge in "FINAL FANTASY XIV" (MMORPG) (Japanese)
Yakumo Shinonome in "Code Vein" (VG) (Japanese)
Yonezawa in "I DOLL U" (VG) (Japanese)
Yoshito Naruse in "Unbalance Na Netsu" (Drama CD) (Japanese)
Yukikage Sanada in "Shinobi, Koi Utsutsu -Setsugekka Koi Emaki-" (VG) (Japanese)
Yukikage Sanada in "Shinobi, Koi Utsutsu" (VG) (Japanese)
Yukimura Shouji in "Kirai Ja nai kedo" (drama cd) (Japanese)
Yukimura Shouji in "Koi Ja nai kedo" (Drama cd) (Japanese)
Yukimura Shouji in "Warui koto shitai" (drama cd) (Japanese)
Yukimura Shouji in "Waruiko Demo Ii" (Drama Cd) (Japanese)
Yun-seoung in "Soul Calibur 3" (VG) (Japanese)
Yuri Lowell in "Project X Zone" (VG) (Japanese)
Yuri Lowell in "Tales of the Heroes: Twin Brave" (VG) (Japanese)
Yuri Lowell in "Tales of the World: Reve Unitia" (VG) (Japanese)
Yuri Lowell in "Tales of Vesperia" (VG) (Japanese)
Zenos yae Galvus in "Final Fantasy XIV: Stormblood" (MMORPG) (Japanese)!~

Itsuki Hashima is a novelist who's hopelessly enamored with the idea of little sisters and is constantly surrounded by colorful characters. A world class genius and love-guru who's beauty almost seems a waste on her. A girl who's constantly troubled by her friendships, love interests, and can't even find refuge in her dreams. A ridiculously talented illustrator. Each of them have as many problems and worries as the next and they never have a dull day together as they play games, travel, and work together. From the same author of the famous I Don't Have Many Friends, Yomi Hirasaka!
 
(Source: Yen Press)

Original "chibi" styled animations of Imouto sae Ireba Ii. posted on the anime's official Twitter.

Itsuki Hashima is a novelist who's hopelessly enamored with the idea of little sisters and is constantly surrounded by colorful characters. A world class genius and love-guru who's beauty almost seems a waste on her. A girl who's constantly troubled by her friendships, love interests, and can't even find refuge in her dreams. A ridiculously talented illustrator. Each of them have as many problems and worries as the next and they never have a dull day together as they play games, travel, and work together. From the same author of the famous I Don't Have Many Friends, Yomi Hirasaka!
 
(Source: Yen Press)
 
Note: Includes four extra chapters.

Original "chibi" styled animations exclusively on volumes of the Imouto sae Ireba Ii. Blu-ray/DVD.

Kenjirou Toki