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Oryou is a short girl with midlength unruly black hair and a pair of midnight blue eyes. She wears red eyeglasses. Like Erwin, she tends to smile a lot although hers appears much less cocky.
Oryou is well known for her expertise on the history of the Bakumatsu period. She's also fairly calm and, although having a kinda boyish and messy hairdo, she's still the most feminine of the Hippo Team (she's also the only member of the team whose nickname came from a woman).
- Her real name is based on Artist Takeshi Nogami, who created the manga Girls und Panzer: Ribbon Warrior, and Serafuku to Juusensha.
- Her nickname is based on Narasaki Ryou.
- She is the only Ooarai student that wears a non-pleated skirt. However, in some scenes she appears with a pleated skirt, it's whether an edition blooper or changing on style.
- A MLLSD 4koma heavily suggested that Oryou doesn't wear any underwear when Saori ask her & Saemonza if it's true that Japanese women didn't wear underwear until recently, they confirm her that's true even in their favorites periods and they finish with a grin that tends to confirm Saori's belief.
- Oryou's birthday is the November 15th, the same date in year 6 of Tenpou era (Jan. 3, 1836) and year 3 of Keiou era (Dec. 10, 1867) of the Japanese old calander when Sakamoto Ryōma, a Samurai who is admired by Oryou, was born and died.
- In the non-canon 4koma Lovey-Dovey Panzer, Oryou jump off her bath naked to warn her mates of an attack. This a reference to the 1862 Teradaya incident when Narasaki Ryou while taking a bath, when she worked at Kyoto's Teradaya Inn, overheard the arrival of assassins from her bathtub and ran naked through the inn to warn Sakamoto Ryouma and his allies, who were here to plot a revolt in Kyoto. Sakamoto escaped with slight injuries, and they were married soon after.
- As Sakamoto Ryōma is her idol, she tends to be very upset when someone makes fun of him.
|Ooarai Girls High School||Anglerfish Team||Miho Nishizumi ♦ Saori Takebe ♦ Hana Isuzu ♦ Yukari Akiyama ♦ Mako Reizei|
|Duck Team||Noriko Isobe ♦ Taeko Kondou ♦ Shinobu Kawanishi ♦ Akebi Sasaki|
|Hippo Team||Erwin ♦ Caesar ♦ Saemonza ♦ Oryou|
|Rabbit Team||Azusa Sawa ♦ Aya Oono ♦ Ayumi Yamagou ♦ Yuuki Utsugi ♦ Karina Sakaguchi ♦ Saki Maruyama|
|Turtle Team||Anzu Kadotani ♦ Momo Kawashima ♦ Yuzu Koyama|
|Mallard Team||Midoriko Sono ♦ Moyoko Gotou ♦ Nozomi Konparu|
|Leopon Team||Satoko Nakajima ♦ Hoshino ♦ Suzuki ♦ Tsuchiya|
|Anteater Team||Nekota ♦ Momoga ♦ Piyotan|
|Shark Team||Ogin ♦ Murakami ♦ Cutlass ♦ Flint ♦ Rum|
|Miscellanous||Taiga Ou ♦ Sadoka ♦ Mazoe|
|St. Gloriana Girls High School||Darjeeling ♦ Orange Pekoe ♦ Assam ♦ Rosehip ♦ Rukuriri ♦ Nilgiri ♦ Vanilla ♦ Cranberry ♦ Earl Grey|
|Saunders Girls High School||Kay ♦ Alisa ♦ Naomi ♦ Helmet-Chan|
|Anzio Girls High School||Anchovy ♦ Carpaccio ♦ Pepperoni ♦ Amaretto ♦ Gelato ♦ Panettone|
|Pravda Girls High School||Katyusha ♦ Nonna ♦ Klara ♦ Nina ♦ Alina|
|Kuromorimine Girls High School||Maho Nishizumi ♦ Erika Itsumi ♦ Koume Akaboshi ♦ Leila Rou ♦ Emi Kojima ♦ Geshiko ♦ Sangou ♦ Mauko ♦ Sheska|
|Chi-Ha-Tan Academy||Kinuyo Nishi ♦ Fukuda ♦ Haru Tamada ♦ Hosomi ♦ Nagura ♦ Hamada ♦ Teramoto ♦ Ikeda|
|Jatkosota High School||Mika ♦ Aki ♦ Mikko ♦ Touko ♦ Lili|
|BC Freedom High School||Ribbon Warrior||Asparagus ♦ Moules ♦ Bordeaux|
|Das Finale||Marie ♦ Andou ♦ Oshida|
|Tatenashi Girls High School||Shizuka Tsuruki ♦ Rin Matsukaze ♦ Haruka Endou|
|Bonple High School||Jajka ♦ Uszka|
|Maginot Girls Academy||Éclair ♦ Fondue ♦ Galette ♦ Madeleine ♦ Colombier|
|Count High School||Noemi Kohiyama ♦ Anna Masukura ♦ Nachigami Sisters ♦ Marina Constantinescu|
|Tategoto High School||Aung|
|Maple High School||Trout ♦ Amber ♦ Oleo|
|Kebab High School||Bosphorus|
|Bellwall Academy||Tiger I Crew||Emi Nakasuga ♦ Hitomi Yuzumoto ♦ Kita ♦ Takami ♦ Nagisa Shiratori|
|Jagdpanther Crew||Neko Yamamori ♦ Yano ♦ Koharu Sakai ♦ Kanbara ♦ Hirono|
|Elefant Crew||Chifuyu Doi ♦ Terauchi ♦ Wakasugi ♦ Kunihiro ♦ Nogata ♦ Enami|
|T-44 Crew||Youko Minami ♦ Saionji ♦ Azuma ♦ Hokuto|
|Panzer II Crew||Kashiwaba Sisters|
|West Kureouji Grona Academy||Kiri Shiratori|
|All-Stars University Team||Alice Shimada ♦ Azumi ♦ Megumi ♦ Rumi|
|Japan Sensha-dō Federation||Ami Chōno ♦ Shiho Nishizumi ♦ Renta Tsuji ♦ Chiyo Shimada ♦ Shichiro Kodama ♦ Kikuyo Idegami ♦ Kanon Sasagawa ♦ Hibiki Inatomi ♦ Remi Takashima|
|Non-Affiliated||Yoshiko Akiyama ♦ Jungorou Akiyama ♦ Hisako Reizei ♦ Shinzaburo ♦ Yuri Isuzu ♦ Chihiro Yusa ♦ Boko|