|Name in Japanese||小鳥遊 十花|
|Romaji Translation||Takanashi Tōka|
|Debut (Anime)||Chuunibyou Demo Koi ga Shitai! Episode 02 - Priestess of...the Melody|
|Voice Actor (Japanese)||Eri Sendai|
|Voice Actor (English)||Genevieve Simmons|
|Age||25 (S1) 26 (S2) 27-28 (Movie)|
|Relatives||Rikka Takanashi (younger sister, Anime only)|
Mr. Takanashi (father, deceased, Anime only)
She is voiced by Eri Sendai in the anime. In the English dub, she is voiced Genevieve Simmons
Tōka Takanashi is Rikka Takanashi's older sister. She lived one floor above Yuuta Togashi for quite some time. She is allergic to cats, which later forces Yuuta to keep Rikka's cat. She gets frustrated when Rikka is too obsessed with her delusions. She often arrives home late due to her work as a chef in a famous restaurant. Since she was a rhythmic gymnast back in high school, she is extremely flexible, which is evident throughout the series.
Tōka has waist-length black hair that has a long single hair strand sticking out on top of her head and red eyes.
She is often seen wearing a belt-like choker on her neck, a black t-shirt and jeans or cream pants. She is also commonly seen with a metal ladle of which she uses to discipline her sister or anyone else she finds annoying.
Tōka has a serious demeanor in every situation, though she occasionally uses deadpan humor. Once Yuuta Togashi suggested her to speak with Rikka Takanashi herself but she refused as it will spoil the serious image of hers and that it was too embarrassing. She is also quite strict, shown when she forces Sanae Dekomori to finish up the whole bowl of her salad with cheese, but this may have been because she saw it as an insult that Dekomori called the salad disgusting. She is shy and blushes when Shinka Nibutani praises her cooking.
Tōka and Rikka used to live together with their parents. After their father's death, the family of four shattered. Tōka started to live on her own because of her job and had to leave Rikka behind.
- The name Tōka means "ten" (十) (tō) and "flower, blossom" (花) (ka).
- Tōka's surname Takanashi means "little bird, small bird" (小鳥) (taka) and "play" (遊) (nashi).
- Tōka is one of the many characters not to appear in the light novel.
- Tōka is allergic to cats.