Why do I like this girl? Well .. sometimes I can see myself from her. I always hide my true feelings. I am not that friendly which is why I really treasure my few friends.
Rikka Takanashi is a "chūnibyō patient" who enrolls into the same high school with Yuuta Togashi (whom she holds feelings for). Unlike Yuuta, she is still suffering from the eighth grader syndrome. She believes she is a sorceress possessed by a "Tyrant's Eye" that will reveal destinies. She wears an eyepatch over her right eye to seal her "Tyrant's Eye". Those who have seen her "Tyrant's Eye" are considered as completely signing a contract with her. She moved to stay with her sister, Tōka Takanashi.
Rikka has cyan coloured eyes, and applies a yellow colour contact lense on her right eye. She has dark-blue hair colour and ties a yellow ribbon in her hair. She wears a pair of roller shoes instead of a normal pair of school shoes.
She is alienated by her classmates as she doesn’t try to make friends with them. She only has 5 contacts in her phone, which are Tōka, Yuuta, Shinka Nibutani, Kumin Tsuyuri and Sanae Dekomori. She always brings a lunchbox to school which Tōka prepares for her everyday and doesn’t allow her to eat anything from the convenience store. She doesn’t like to eat tomatoes and accuses that they look like monsters' eggs. She often brings her main “weapon” around, which is the Schwarz Sechs Prototype MkII, a spring loaded umbrella. With that, she can cast special attacks such as Gungnir, Schwarz Schild, Wicked Twinkle, Dark Matter Blaze, Judgement Lucifer, Laplace-Sphere etc.