"Kobayashi Riko is a character from the Japanese manga ""Straight Girl Trap."" She is a high school student who is known for her aloof and tomboyish personality. Riko is one of the main characters of the story and plays an integral role in the plot.

Riko is a tall and slender girl with short brown hair and sharp eyes. She often wears her school uniform casually and seems not to care about her appearance. Despite her rough exterior, Riko has a kind heart and cares deeply for her friends.

Riko's past is shrouded in mystery, and not much is known about her family or upbringing. However, it is clear that she has a troubled past and carries a lot of emotional baggage.

Riko's relationship with the other characters is complex. She initially dislikes the protagonist and main love interest, but eventually, they form a close bond. Riko also has a complicated relationship with her childhood friend, and the tension between them drives much of the narrative.

Throughout the story, Riko struggles with her sexuality and comes to terms with her romantic feelings for other women. Her journey is one of self-discovery and acceptance, and she ultimately learns to embrace her true self.

Overall, Kobayashi Riko is a complex and fascinating character whose depth and emotional complexity make her stand out in the world of manga."