Tōko Sakurai is a young woman with a cute and gentle appearance. She has mid-back length black hair, with bangs swept to the right and chest-length strands framing her face. In a flashback from Episode 5, she is shown to have had shoulder-length hair during her student years. Her defining facial features include gray eyes and a small mole under her right eye.

Sakurai possesses a medium-sized bust, which contributes to her reputation as the most attractive woman in the office. Her figure often makes her the object of admiration among her male coworkers, particularly Sōta Kazama, who struggles to avoid staring at her chest. However, this also becomes a source of jealousy for Futaba Igarashi, who is notably flat-chested.

Her typical office attire consists of a light pink long-sleeve button-up shirt, a dark pink vest, black pants, and matching black shoes. In Episode 9, she is seen wearing a red two-piece swimsuit adorned with white floral patterns during a beach outing.

One day, after Harumi Takeda acquires a new phone, Tōko Sakurai notices Futaba Igarashi staring at her own screen. Sensing something suspicious, Sakurai playfully snatches Igarashi’s phone and discovers that she has Takeda’s phone number saved. Igarashi hastily explains that she was merely adding a senior’s contact, but when she receives a text from Takeda thanking her, she blushes, prompting Sakurai to quietly remark on how transparent Igarashi is about her feelings.

During a lunch break, Sakurai spots an origami flower on Sōta Kazama’s desk, and he explains that origami is a hobby of his. Amused, she requests that he make more, drawing the attention of Takeda and Igarashi, who also take some of the folded creations.

On New Year’s, Sakurai drags Kazama to a shrine, where the two are mistaken for a couple and end up being interviewed. Playing along, they act like a couple, with Sakurai explaining that she was simply bored and convinced Kazama, who also had no plans to accompany her. With little else to talk about, Kazama brings up Igarashi and Takeda’s relationship, recalling how Igarashi once disliked Takeda, but now even falls asleep next to him. He then shows a picture he secretly took of them sleeping together on a train, unaware that the interview is broadcasting live. Unfortunately for him, Igarashi is nearby and sees it on TV, prompting her to storm in, hit Kazama, and delete the image in embarrassment.

A little later, Kazama wakes up to find himself resting on Sakurai’s chest. She informs him that the picture was deleted, but Kazama nonchalantly reveals that he saved it to the cloud. Curious, Sakurai asks why he agreed to go out with her despite planning to spend the day gaming. Kazama admits that since she kept pestering him, he was flattered that someone as popular as her invited him and figured it would be more fun to spend time with her than stay home alone. Pleased with his response, Sakurai heads off to buy them drinks.

During her absence, a girl approaches Kazama and, upon learning that he and Sakurai are not a couple, offers to show him a picture she took. Before he can look at it, Sakurai returns and snatches the camera. Realizing that the girl had captured a moment of her kissing an unconscious Kazama, she quickly deletes the photo and forbids him from ever seeing or knowing what it contained.

Tōko Sakurai is a kind, sweet, and polite young woman who maintains a friendly and approachable attitude, making her highly popular among her male colleagues. Her warm and composed personality often draws admiration, though she secretly harbors feelings for Sōta Kazama, particularly because he does not openly display attraction toward her like the others. Despite her usual calm and collected nature, she enjoys teasing Kazama whenever he becomes flustered, relishing the opportunity to make him squirm.

However, beneath her composed exterior, Sakurai has a jealous streak, especially when she perceives potential love rivals vying for Kazama’s attention. She subtly and sometimes openly intervenes in situations that could lead to romantic tension between him and other women. One such instance occurs when Futaba Igarashi offers to share an energy drink with Kazama. Sakurai coldly prevents it, claiming with deadpan eyes that it would “stiffen her bones” though in reality, she is simply blocking an indirect kiss between them. She follows up by poking Kazama’s forehead, seemingly frustrated by his failure to grasp her intentions.

Her jealousy is even more apparent when it comes to Natsumi Kurobe, as shown in multiple instances. In Episode 9, when Sakurai catches Kazama staring at Kurobe’s chest, she forcefully grabs his face and enviously reminds him that she also has a pair, making him look at her instead. Later, while playing volleyball, Kazama once again glances at Kurobe, prompting Sakurai to punish him by throwing a volleyball at his face while flashing a smiling yet menacing glare. In Episode 10, while refereeing a basketball game, she blows her whistle and calls a personal foul when Kurobe presses her chest against Kazama’s back to steal the ball, causing him to freeze up. Her decision is clearly fueled more by jealousy than by actual game regulations.

Despite these moments of envy, Sakurai remains a caring and considerate individual. Her interactions with Kazama reveal a playful yet deeply affectionate side, showcasing her growing attachment to him. While she enjoys teasing him, her protectiveness and occasional jealousy highlight the depth of her feelings, making her dynamic with Kazama both endearing and entertaining.

Sōta Kazama
Sakurai harbors strong feelings for Kazama, though she often expresses them playfully rather than openly. While she is not overtly aggressive, she easily becomes jealous when Kazama interacts with other women. Her jealousy manifests in both verbal and physical ways, as seen in instances where she forbids him from ogling or speaking sweetly to anyone besides herself. When words fail, she resorts to mild force, such as snapping his head toward her chest to distract him or hitting him with a volleyball when she catches him staring at Natsumi Kurobe (Episode 9).

Another example of her possessiveness occurs when Futaba Igarashi offers to share an energy drink with Kazama. Sakurai intervenes by falsely claiming that energy drinks “melt bones,” attempting to prevent an indirect kiss between them. When Kazama remains oblivious to her reasoning, she pokes his forehead, frustrated by his lack of awareness. Despite these playful yet jealous moments, Sakurai’s affection for Kazama is evident, as she often teases him but also deeply cares for his well-being.

Futaba Igarashi
Igarashi is Sakurai’s coworker at Itomaki Shoji, and their relationship is generally warm and supportive. Much like how Sakurai plays the role of a kind older sister to her younger brother, Yūto, she occasionally takes on a similar role with Igarashi, offering her guidance and teasing her about her obvious crush on Harumi Takeda.

Natsumi Kurobe
Despite having a well-endowed figure herself, Sakurai occasionally feels jealous of Kurobe’s larger chest, particularly when she notices Kazama staring at her. This is evident in moments where she tries to redirect his attention to herself, such as grabbing his face or playfully punishing him for looking at Kurobe too long. While there is no overt hostility between them, Sakurai’s jealousy creates moments of lighthearted tension.

Yūto Sakurai
Sakurai is a caring and supportive older sister to Yūto Sakurai, often looking after him and ensuring his well-being. Their relationship is affectionate, with Sakurai embodying a protective yet gentle sibling dynamic.

The name Tōko (桃子) is composed of the kanji “peach” (桃, tō) and “child” (子, ko), giving it the meaning of “peach child.” Interestingly, the same kanji combination can also be read as Momoko (桃子), an alternative pronunciation of the name.

Sakurai’s surname, Sakurai (桜井), consists of “cherry blossom” (桜, sakura) and “well, mine shaft, pit” (井, i), which can be interpreted as “cherry blossom well” or “cherry blossom spring.” The floral symbolism in both her given name and surname aligns with her graceful and gentle personality.