Yuuna Encouragement
This article is a stub!
Be a Hero and help out the Yuki Yuna is a Hero Wiki by expanding it!
Washio Sumi
Kanji 鷲尾 須美
Romaji Washio Sumi
English Sumi Washio
Age 12
Gender Female
Grade 6th Year Elementary Student
Blood Type AB
Height 151 cm
Favorite Food Udon
Birthday April 8
Status Inactive
Family Unnamed Father
Unnamed Mother
First Appearance
Debut Episode 1
Voice Actress/Actor
Japanese Voice Mimori Suzuko
English Voice {{{English Voice}}}

Washio Sumi (鷲尾 須美 Washio Sumi?) is one of the main characters of the Washio Sumi is a Hero light novel and anime series. She is a sixth-year elementary school student and a member of the Year 298 Hero Team.

You may be searching for her older counterpart, Togo Mimori.


Some years ago, when Sumi was born as Togo Mimori, she was scouted by the Taisha for another group of Heroes with Nogi Sonoko and Minowa Gin. Because of her strong aptitude, she was adopted by the influential Washio family, giving her the name Washio Sumi. Her real family was compensated with lavish gifts for her services and sacrifices.


Her Hero Form is a long, neon purple kimono-like dress with blue accents. She has a purple and grey-black undersuit and her hair is tied back with a chrysanthemum-shaped barette. Sumi also had much more small armor additions then, due to the lack of the fairy system.


To be added...

Powers and Abilities Edit

She fought using a bow which could charge up its arrows to explode on impact, or fire arrows which could stick to its target and explode after a delay. After Gin's death, she was granted her first fairy, Aobozu. As a Hero, Sumi possesses the Mankai ability after expending a great deal of magic, granting exceptional power unique to Sumi for a limited amount of time. Sumi's Mankai gives her control over a futuristic warship, armed with several mobile cannons.

Fairies Edit

Aobozu: (青坊主) An egg spirit with a blue flower marking on its side. It grants Sumi a large rifle she nicknames "Shirogane".


Washio Sumi's Chapter - Friends Edit

Washio Sumi's Chapter - Soul Edit

Washio Sumi's Chapter - Promise Edit


Nogi SonokoEdit

Sumi's dear friend and fellow Hero. Sumi and Sonoko originally met when they were training to be Heroes and fought the Vertex alongside Minowa Gin. Although they originally did not get along, they quickly became good friends and bonded further when Gin lost her life. Sadly, Sumi forgot about Sonoko when she lost her memories to the Sange.

Minowa Gin Edit

Sumi's good friend and fellow Hero. They met during training and fought the Vertex alongside Nogi Sonoko. Gin's tomboyish and playful nature often clashed with Sumi's studious and serious nature, but despite this, they had become very good friends prior to Gin's death.

Forms of Address Edit

Person Nickname
Self Watashi (私)
Yuki Yuna Yuna-san (友奈さん)
Togo Mimori Togo-san (東郷さん)
Inubouzaki Fu Fu-san (風さん)
Inubouzaki Itsuki Itsuki-san (樹さん)
Miyoshi Karin Karin-san (夏凜さん)
Nogi Sonoko (YuYuYu) Sonoko-san (園子さん)
Nogi Sonoko (WaSuYu) Sono-cchi (そのっち)
Minowa Gin Gin (銀)
Nogi Wakaba Wakaba-san (若葉さん)
Uesato Hinata Hinata-san (ひなたさん)
Takashima Yuna Takashima-san (高嶋さん)
Koori Chikage Chikage-san (千景さん)
Doi Tamako Tamako-san (球子さん)
Iyojima Anzu Iyojima-san (伊予島さん)
Shiratori Utano Utano-san (歌野さん)
Fujimori Mito Mito-san (水都さん)
Akihara Sekka Sekka-san (雪花さん)
Kohagura Natsume Natsume-san (棗さん)


  • The reason she named her sniper rifle "Shirogane" was due to it's character (銀) having the same writing as the kanji for Gin/Silver.

Flower MotifEdit

Sumi is associated with a Kikka (菊) / Chrysanthemum, which is said to represent rejuvenation and vitality, as well as royalty. Chrysanthemum flowers are also representative of autumn in Japan, contrasting Cherry Blossoms (which are Yuna's flowers), which are representative of spring.




"Yuki Yuna is a Hero" Character Portal
Yuki Yuna is a Hero Yuki YunaTogo MimoriInubouzaki FuInubouzaki ItsukiMiyoshi KarinNogi Sonoko
Washio Sumi is a Hero Washio SumiNogi SonokoMinowa GinAki-Sensei
Nogi Wakaba is a Hero Nogi WakabaUesato HinataDoi TamakoIyojima AnzuKoori ChikageTakashima YunaShiratori UtanoFujimori MitoAki Masuzu
Kusunoki Mebuki is a Hero Kusunoki MebukiKokudo AyaKagajou SuzumeYamabushi ShizukuMiroku Yumiko
A Sparkling Bouquet Akihara SekkaKohagura NatsumeAkamine YunaMiroku RengeKiryu Shizuka
Hero History Apocrypha Uesato HinataAki MasuzuHanamoto YoshikaKarasuma Kumiko
Community content is available under CC-BY-SA unless otherwise noted.