|Anime | Manga|
|School||Kunugigaoka Junior High School|
|Japanese Voice||Kaito Ishikawa|
|English Voice||Justin Pate|
Ren has black hair (brown in the anime) that is fashioned into a kariage (clipped) hairstyle and dark, almond-shaped eyes. Like Asano, he is considered attractive.
Like the other Virtuoso, Ren is an arrogant person. He also appears to be rather narcissistic. However, he isn't rude and comes across as quiet which may stem from his affinity with poetry and the humanities. He's flirtatious, and often uses his knowledge in poetry to flirt with girls. He normally doesn't take part in the Class E bashing and it's possible that he holds a degree of respect for their abilities (as shown during the first finals arc where he complimented Yukiko Kanzaki for her ability to understand the words). Out of all of the Virtuoso, Ren is arguably the nicest.
Poetry and Humanities: Ren's specialty. He has been described as a shrewd poet and is very talented in this field. He often uses modified poems to sweeten his words when talking to girls showing that he holds vast knowledge in this field.
- Yukiko Kanzaki: Ren's Class E academic rival for Japanese. Unlike the other Virtuoso, who looked down upon their academic rivals in Class E, he appeared to show a degree of respect for her abilities. He is attracted to her beauty and is shown to flirt with her constantly when interacting with her, much to her uneasiness, and the annoyance of Tomohito Sugino.
- Gakushū Asano: Ren's friend and fellow Virtuoso. It is noted that these two stand on more equal ground due to both being on the student council in addition to their grades. It is hinted that these two are close friends considering the fact that Asano referred to him by his first name and responds the most to him, and the fact that he seems the most confidence in Asano and his abilities. He also noted to be rather casual towards Asano.
|Kunugigaoka Junior High School|
|Faculty||Korosensei • Tadaomi Karasuma • Irina Jelavić|
|Students||Masayoshi Kimura • Hinano Kurahashi • Yūma Isogai • Hinata Okano • Hiroto Maehara • Megu Kataoka • Kōtarō Takebayashi • Tōka Yada • Kōki Mimura • Rio Nakamura • Nagisa Shiota • Kaede Kayano • Taisei Yoshida • Yukiko Kanzaki • Taiga Okajima • Rinka Hayami • Tomohito Sugino • Yuzuki Fuwa • Takuya Muramatsu • Kirara Hazama • Ryūnosuke Chiba • Manami Okuda • Sōsuke Sugaya • Sumire Hara • Ryōma Terasaka • Karma Akabane • Itona Horibe • Ritsu|
|Faculty||Gakuhō Asano • Kiyoshi Terai|
|Students||Tomoya Seo • Teppei Araki • Natsuhiko Koyama • Ren Sakakibara • Gakushū Asano • Kaho Tsuchiya • Kazutaka Shindō • Kokona Tagawa • Nobuta Tanaka • Chousuke Takada|