Yoshida Serina is a tall and stylish young girl, often recognized for her light-brown hair, which she frequently ties up in a ponytail, adding to her sporty and casual appearance. She is the second tallest member of Yamada Anna’s friend group, standing only about half-a-head shorter than Yamada, which gives her a confident and commanding presence.

When outside of school, Yoshida’s sense of fashion leans towards a “street” style, reflecting her casual and slightly rebellious personality. Her outfits often include trendy, comfortable pieces that suggest she may have a delinquent streak, adding depth to her otherwise outgoing and sociable character.

Yoshida Serina is often portrayed as the most mature and skeptical member of her friend group, balancing the lively and carefree personalities of her peers with her sharp observational skills and practical demeanor. She is also highly attentive, frequently noticing subtle details that others overlook. For example, she realizes that Kyoutarou Ichikawa had visited Yamada Anna’s house before, based on small yet telling behaviors such as his familiarity with the elevator buttons and his ability to find the restroom without assistance—observations that completely elude her friend Sekine Moeko.

Yoshida’s maturity often makes her seem above typical adolescent concerns, and she occasionally acts aloof when it comes to topics like romance. However, her preferences for “tough” boys and yankee types suggest she harbors a playful fondness for rebellious personas. Despite her outward skepticism, Yoshida is deeply supportive of her friends. This is evident in moments like her apparent recommendation of the wallet chain as a gift for Ichikawa, as she approvingly checks it once he begins wearing it. Her grounded yet attentive nature makes her a stabilizing force within the group while subtly guiding their dynamics.

As one of Anna’s closest friends, Serina acts as a supportive and observant presence in the series. She often helps create opportunities for Yamada and Ichikawa to interact, either through playful teasing or by arranging group activities that bring them together.

Serina’s role, though secondary, adds depth to the story by showcasing the dynamics of friendship and the importance of having a supportive social circle during adolescence. Her interactions highlight the subtle ways friends can influence and encourage each other’s relationships.

• Yamada Anna: Serina is a close friend of Yamada, often providing emotional support and lighthearted companionship. She admires Yamada’s charm and enjoys teasing her about her interactions with Ichikawa.

• Kyoutarou Ichikawa: While not particularly close to Ichikawa, Serina occasionally interacts with him, recognizing the potential for his relationship with Yamada and subtly encouraging it.

• Friend Group: Serina is an integral part of Yamada’s friend group, helping to maintain a sense of unity and balance within the circle.

Though a secondary character, Yoshida Serina plays a meaningful role in fostering the relationships and dynamics among the main cast. Her attentiveness and sociability make her a vital part of Yamada’s friend group, ensuring her presence remains memorable and impactful throughout the series.