Movie
Description
Kanae Sumida is a classmate of Takaki Tōno during his junior high and high school years in Tanegashima. She first meets him when he transfers to her class in their second year of junior high and immediately develops feelings for his composed demeanor and kindness. To stay near him, she studies intensively to pass the entrance exams for his high school, succeeding despite academic struggles.

Her family includes an older sister who inspired her surfing hobby and later becomes a teacher at their high school. In sixth grade, she found and adopted a brown dog named Cub on the seashore. Kanae has a tanned complexion from frequent surfing, short hair above the shoulders, a slender build, and often visibly blushes around Takaki.

In high school, she regularly waited after school to coincidentally walk home with Takaki, sometimes stopping at a convenience store where she deliberately struggled to choose drinks. She surfed daily but struggled to balance on her board, partly distracted by her unspoken feelings; she linked mastering the surfboard to gathering courage to confess. Kanae observed Takaki frequently composing unsent text messages and staring into the distance, sensing his focus lay elsewhere. A pivotal moment occurs when her moped malfunctions, forcing them to walk home. As she nearly confesses while crying, a rocket launch symbolizes Takaki's unreachable aspirations. Recognizing his inner focus—later implied to be his unresolved past with Akari Shinohara—she chooses silence, accepting her love is unrequited. She later watches his plane depart for Tokyo unseen.

In the manga adaptation, ten years later, Kanae works as a nurse and is pursued romantically by a fellow surfer named Riyou. After her brother-in-law's injury and her sister's childbirth, her sister encourages her to seek Takaki in Tokyo using contact information obtained from former classmates. Visiting a location Takaki once mentioned yields no success. Resting on a bench, she sees a passing figure who may be him but remains uncertain.

Kanae's personality embodies relatable normalcy and uncertainty about her future. She lives in the present, dedicated to surfing and her affection for Takaki without long-term plans. Her emotions are openly displayed: happiness near Takaki, anxiety about his feelings, and sorrow recognizing their impossibility. Symbolically, her unfinished career survey transformed into a paper airplane reflects her willingness to let life unfold without forced direction. Her name, meaning "flower, blossom" (花) and "seedling" (苗), subtly mirrors her grounded yet hopeful nature.