History Characters / The100GirlfriendsWhoReallyReallyReallyReallyReallyLoveYou21To30

* EveryoneHasStandards: Subverted given she joins to the group anyway, but despite her very carefree lifestyle, she still finds it questionable when she discovers Rentarou has twenty girlfriends including an 89 year-old woman, going so far as to ask him if he even knows the concept of ethics.

** To Mai. Momoha is slovenly and viceful but shows selfless gratitude to others for their kindness, and is very patient. Mai is proper and diligent but is mainly motivated by jealousy and vanity, and is clumsy and impatient. Mai even serves as a caretaker of sorts to her, as Mai is usually the one who helps Momoha get back to her tent when she's too drunk to get there by herself.

* AnimalMotifs: She has a rabbit motif to her. Her hair is styled in two large horns resembling rabbit ears, she has numerous rabbit accessories on her outfit, she has prominent upper teeth, and she runs like a hare. Personality-wise, she shares a similar trait with rabbits in that she HatesBeingAlone, her behavior directly being compared to how some rabbits are known to die from being isolated. [[AmbiguouslyRelated Whether she has any relation to the similarly themed Newbie Idol is unknown.]]

* InsultOfEndearment: Calling people a "daft sod" would normally be an insult, but due to Matsuri's upbringing, that's what she calls everyone, as it's meant to be neutral or affectionate. When she's actually mad at someone, she calls them a "berk" instead. That said, there are occasions where she really does mean "daft sod" as an insult

* ArtisticLicense: When explaining her issues to the Rentarou Family, she specifically says she has "Reverse Trypophobia". The reverse of a dislike of multiple holes would be more accurately "Trypo''philia''" though, with what Usa-chan is describing more accurately being "Kenophobia", being a fear of open spaces, and "Autophobia", being anxious when alone.

* CharacterTics: She frequently keeps her arms pointing up in front of her chest with her hands balled.

* LastNameBasis: An informal version, with her asking everyone to call her "Usa-chan". Rentarou calls her "Usami-senpai" before she joins the Family, and afterwards calls her "Usa-chan-senpai". Once in the Family proper, everyone refers to Usa-chan with some variation of "Usa-chan-''honorific''". Rentarou and Shizuka use "Usa-chan-senpai", while Momiji and Mimimi refer to her as "Usa-chan-san".

* OnlyOneFindsItFun: When everyone in a train gets smushed together, Usa-chan is the only one who enjoys it judging by the hearts in her eyes.

* InsultOfEndearment: Calling people a "daft sod" would normally be an insult, but due to Matsuri's upbringing, that's what she calls everyone, as it's meant to be neutral or affectionate. When she's actually mad at someone, she calls them a "berk" instead.

* AnimalMotifs: It's subtle, but she has a rabbit motif to her. Her hair is styled in two large horns resembling rabbit ears, she has numerous rabbit accessories on her outfit, she has prominent upper teeth, and she runs like a hare. Personality-wise, she shares a similar trait with rabbits in that she HatesBeingAlone, her behavior directly being compared to how some rabbits are known to die from being isolated. [[AmbiguouslyRelated Whether she has any relation to the similarly themed Newbie Idol is unknown.]]

* LastNameBasis: An informal version, with her asking everyone to call her "Usa-chan". Rentarou calls her "Usami-senpai" before she joins the Family, and afterwards calls her "Usa-chan-senpai". Momiji refers to her as "Usa-chan-san".

[[caption-width-right:350:The ElegantClassicalMusician NightmareFetishist]]\\

* LastNameBasis: An informal version, with her asking everyone to call her "Usa-chan". Rentarou calls her "Usami-senpai".

Rentarou's 28th girlfriend, who first appears on the rooftop with the rest of the Rentarou family while he's busy, acting as if she was always with the group and tricking the others into thinking they just overlooked her. She's a second year high school student who can't bear to be alone.

* ArtisticLicense: When explaining her issues to the Rentarou Family, she specifically says she has "Reverse Trypophobia". The reverse of a dislike of multiple holes would be more accurately "Trypo''philia''" though, with what Shiina is describing more accurately being "Kenophobia", being a fear of open spaces, and "Autophobia", being anxious when alone.

** Shiina struggled to make friends due to stalking them and getting clingy, while Meme struggled to get people to not pay attention to her.
** Like Eira, her life's dominated by her phobia, but Eira's dealing with things she can't handle physically while Shiina's dealing with things she can't handle emotionally.
** Forms a natural contrast with her fellow 2nd Year, Mimimi. Mimimi has long, blonde hair; Shiina's hair is black and shaped into upright 'bunny ears.' Mimimi focuses on beauty, ergo emphasizing individual characteristics and distinguishing features. Shiina focuses on commonality and the sense of a group over its constituent parts. In spite of this, both of their debuts focus on an incident of them being vulnerable and seeking fellowship with another person and facing rejection. (Perceived rejection only, in Shiina's case)

* HatesBeingAlone: Shiina can't handle being alone, her behavior directly compared to how some rabbits can die from loneliness. Being in open spaces can easily send her into a panic, seeing empty spaces and isolated things freaks her out to the point of buying stuff to keep things from being lonely, and the idea of being alone causes her to find cramped spaces filled with people to squeeze into so as to not feel isolated, suggesting she suffers from both autophobia and kenophobia. It's because of this she's initially attracted to the Rentarou Family, as they are such a large and tight-knit group, they seem like the perfect way for her to not be alone, and is overjoyed when they accept her since she now no longer feels alone.

* LonelyDollGirl: Due to her crippling lack of friends, Shiina reveals in Chapter 172 that during her down-time she would have conversations with her favorite stuffed animal. Said stuffed animal has a playback function built into it, so she would essentially be talking to herself.

[[folder:Shiina Usami]]