OVA
Description
Yui Kotegawa is a prominent character and head disciplinary committee member at Sainan High School, sharing a second-year class with the central male protagonist. Her intensely principled and strict demeanor shows little tolerance for behavior she deems inappropriate, especially actions perceived as perverted or shameless, which she frequently condemns with a trademark exclamation. This stems from childhood experiences witnessing boys harass girls, leading her to actively defend others and develop a strong aversion to boys and romance.
Physically, she possesses waist-length black hair with spiky bangs, golden eyes, stands 162 cm tall, and has figure measurements of 88-59-87 cm, resulting in a curvaceous physique comparable to Lala Satalin Deviluke's. She feels self-conscious about this, confirming she began wearing bras earlier than peers as an early bloomer, often leading to embarrassment exploited by others like Momioka Risa.
Her personality exemplifies a modern tsundere archetype. She maintains a stern, puritanical facade with a quick temper, frequently reprimanding misconduct, particularly the central male protagonist's accidental mishaps. However, beneath this lies a kind nature. A significant contradiction exists between her public condemnation of lewd acts and private romantic desires. She secretly harbors a fondness for cats, collecting cat-themed dolls and books, shaping Valentine's chocolates into cat faces, and visiting pet stores covertly, becoming embarrassed if discovered.
A pivotal childhood encounter involved a boy, later identified as the central male protagonist, helping rescue a cat she couldn't save. This challenged her belief all boys were inherently bad, planting a seed of recognition for his kindness, though she maintained general distrust. Her development centers on evolving feelings for him. Initially viewing him as a "shameless pervert," her perspective shifts after he protects her from delinquents. She gradually develops genuine romantic feelings but struggles to acknowledge them due to her tsundere tendencies and inexperience with boys. This conflict manifests as blushing, denial, and angry outbursts when his name arises, alongside private daydreams about marriage, family life with him, and adopting Celine.
Significant milestones include giving him Valentine's chocolate she claimed was obligatory but actually made with care, fantasizing about being his wife and bearing his child, and, during a manipulated moment alone, offering herself to him physically on the condition he remain exclusive to her – highlighting her internal conflict. Over time, she mellows considerably, gaining the specific ability to recognize his distinctive clumsiness even through disguises. Her relationship with her older brother, Kotegawa Yuu, involves mutual interaction; she dislikes his flirtatiousness while he actively teases her about her poorly concealed feelings for the protagonist, hoping she matures emotionally. He also becomes aware of the protagonist's alien-related circumstances and sympathizes.
A recurring gag involves characters misremembering her family name as "Kokegawa" (fool river), provoking an angry reaction. In-universe popularity polls place her first among female characters, significantly ahead of others. She maintains specific forms of address: referring to the central male protagonist formally by surname while he uses hers, and addressing Lala Satalin Deviluke and Haruna Sairenji with formal honorifics. Mea Kurosaki nicknames her "Harenchi-senpai" (Shameless-senpai). Her name combines "old hand/disused article" and "river" for Kotegawa, with Yui meaning "solely" or "only."
Physically, she possesses waist-length black hair with spiky bangs, golden eyes, stands 162 cm tall, and has figure measurements of 88-59-87 cm, resulting in a curvaceous physique comparable to Lala Satalin Deviluke's. She feels self-conscious about this, confirming she began wearing bras earlier than peers as an early bloomer, often leading to embarrassment exploited by others like Momioka Risa.
Her personality exemplifies a modern tsundere archetype. She maintains a stern, puritanical facade with a quick temper, frequently reprimanding misconduct, particularly the central male protagonist's accidental mishaps. However, beneath this lies a kind nature. A significant contradiction exists between her public condemnation of lewd acts and private romantic desires. She secretly harbors a fondness for cats, collecting cat-themed dolls and books, shaping Valentine's chocolates into cat faces, and visiting pet stores covertly, becoming embarrassed if discovered.
A pivotal childhood encounter involved a boy, later identified as the central male protagonist, helping rescue a cat she couldn't save. This challenged her belief all boys were inherently bad, planting a seed of recognition for his kindness, though she maintained general distrust. Her development centers on evolving feelings for him. Initially viewing him as a "shameless pervert," her perspective shifts after he protects her from delinquents. She gradually develops genuine romantic feelings but struggles to acknowledge them due to her tsundere tendencies and inexperience with boys. This conflict manifests as blushing, denial, and angry outbursts when his name arises, alongside private daydreams about marriage, family life with him, and adopting Celine.
Significant milestones include giving him Valentine's chocolate she claimed was obligatory but actually made with care, fantasizing about being his wife and bearing his child, and, during a manipulated moment alone, offering herself to him physically on the condition he remain exclusive to her – highlighting her internal conflict. Over time, she mellows considerably, gaining the specific ability to recognize his distinctive clumsiness even through disguises. Her relationship with her older brother, Kotegawa Yuu, involves mutual interaction; she dislikes his flirtatiousness while he actively teases her about her poorly concealed feelings for the protagonist, hoping she matures emotionally. He also becomes aware of the protagonist's alien-related circumstances and sympathizes.
A recurring gag involves characters misremembering her family name as "Kokegawa" (fool river), provoking an angry reaction. In-universe popularity polls place her first among female characters, significantly ahead of others. She maintains specific forms of address: referring to the central male protagonist formally by surname while he uses hers, and addressing Lala Satalin Deviluke and Haruna Sairenji with formal honorifics. Mea Kurosaki nicknames her "Harenchi-senpai" (Shameless-senpai). Her name combines "old hand/disused article" and "river" for Kotegawa, with Yui meaning "solely" or "only."