OVA
Description
Kei Okano is a supporting character who attends the same high school class as the main cast, where she is one of Chiho Asakawa's closest companions. Physically, she is a teenage girl with brown eyes and brown hair that falls to her shoulders, and she typically wears the standard school uniform which includes a neckerchief.

Okano possesses a personality that is candid, straightforward, and marked by a tomboyish charm. She is known to be quite moody and can come across as awkward in social situations. Her direct manner of speaking often hides a genuinely warm and kind-hearted nature that lies beneath a rougher exterior. She is also deeply loyal to those she cares about. Okano has a tendency to become easily jealous, particularly regarding her close friend Chiho.

Her primary motivation in the story stems from her strong attachment to Chiho, which manifests as a deep-seated fear of losing her friend to others. This feeling is particularly directed toward Yui Ichiki, one of the main protagonists, as Okano worries that Yui might take Chiho away from her. She is initially reluctant to befriend the main trio of Yui, Yukari Hinata, and Yuzuko Nonohara because she does not understand their random and eccentric humor. Okano even openly refers to the three as total weirdos.

Within the narrative, Okano serves as part of a secondary friend group that mirrors the main trio, alongside Chiho and Fumi Hasegawa. She is the most outspoken member of this group. Her role is to create a point of friction and tension between her own circle and the main characters, as she is possessive of Chiho and openly skeptical of the main group's antics. This dynamic allows the story to explore different character combinations and social tensions beyond the primary cast.

Okano shares key relationships with several characters. Her relationship with Chiho is the most significant, as her jealousy and protectiveness over her friend drive much of her early behavior. She is also very close friends with Fumi Hasegawa, who is perceptive and often teases Okano about her true feelings for Chiho, acting as a supportive friend while also treating Okano as something of a plaything. Her relationship with Yui begins with rivalry, as she feels threatened by Yui's growing closeness with Chiho. This tension is eventually resolved after Yui performs a sincere act of kindness, such as helping pay for snacks at a convenience store, which causes Okano to change her opinion and warm up to her, leading the two to become close friends who regularly exchange messages.

In terms of development, Okano undergoes a notable shift from being a cold and jealous rival to becoming a genuine friend to Yui. Her initial battle is to come to terms with her own unnamed and intense feelings, which she struggles to recognize and articulate, often reacting with awkwardness and jealousy rather than direct confrontation. Through her interactions with the main cast, particularly after experiencing Yui's kindness, she overcomes her initial hostility and integrates more peacefully into the broader group of friends. There is no information available regarding any notable abilities or special skills possessed by this character.
Cast