|Serizawa Yuika芹沢 結衣佳 AB|
|Measurements||Height: 158cm, Weight: 47kg, Bust-Waist-Hips: 84-58-83cm|
|Hair||, Brown, Parted to Side, Shoulder-length, Straight|
|Eyes||, Tareme, Violet|
|Body||, Average Height, C Cup, Pale, Slim, Teen|
|Clothes||, Capelet, Clothing with Ribbons, Hair Ribbon, Knee-high Socks, Miniskirt, Ribbon Tie, School Swimsuit, School Uniform|
|Personality||, Airhead, Carefree, Friendly, Kind, Optimist, Pretending, Sharp-tongued, Smart|
|Role||, Childhood Friend, Classmate, Ex-girlfriend, Girlfriend, High School Student, Honor Student, Popular, School Cooking Club Member, Tutor, Wealthy|
|Engages in||, Breakup, Cooking, Drinking, Graduation, Turndown|
|Subject of||, Erotic Massage|
|Engages in (Sexual)||, Female Ejaculation, Outdoor Sex, Sex in Water, Virgin Sex|
|Subject of (Sexual)||, Cowgirl, Nipple Sucking, Reverse Cowgirl, Vaginal Fingering|
|Visual novels||Main character - Harukoi ＊ Otome ~Otome no Sono de Gokigen'you.~|
|Voiced by||Touno Ran|
- The Carefree Childhood Friend
Childhood friend of Akihito and Umi, she also went to the same junior high and high school as they did. She is a spontaneous and easy-going girl, cheerful all year round and liked by everyone. Not very good at sports, but excellent at studying. From a rather rich family, but still likes to challenge herself and find new types of cooking to experiment with.
She was Akihito’s first love, but his confession ended in disaster, and they ended up just staying friends instead. When Akihito meets her again, she’s just the same as back then, and he still has no idea if she knows how he felt for her.
<hidden by spoiler settings>In her route, Akihito reconfirms his feelings to Yuika at the same time as Oikawa who confess his feelings to her. Yuika then decides to choose Oikawa instead of Akihito because she thinks that she doesn't have the right to be loved by Akihito. They then start going out together in the city and walking around the parks. However, she can not lie to her feelings and when Oikawa tries to steal a kiss, her eyes start to reflect something that stops his action.
She thinks, indeed, to be the true and only guilty of the death of Umi because they had disputed themselves that day. It is for this reason that she prefers to go out with Oikawa despite her pure love feelings for Akihito.