Karina Kakogawa is the goalkeeper for the Warabi Seinan High School girls' soccer team, appearing as a supporting character in the narrative. A dedicated second-year student, she consistently plays in the team's matches, participating in all three Saitama preliminary games. Karina possesses distinctive green hair and green eyes. On the field, she wears an orange and black goalkeeper uniform and secures her hair with a headband. Her personality is kind, and she maintains intense focus and concentration during matches. An unfortunate mishap occurred when she planned to accompany her teammate Aya to a futsal tournament but boarded the wrong train, missing her intended transportation. Her given name "Karina" combines the meanings "fragrance" (香), "pear" (梨), and "apple tree" (奈). Her surname "Kakogawa" derives from "add/increase" (加), "old/antiquity" (古), and "river/stream" (川).