Eru Jinja

Full name: Eru Jinja

Nickname: Eru

Gender: Female

Birthday: June 15 (Gemini)

Height: 151 cm

Age: Same age as Chino Kafu

Blood type: AB

Occupation/Status: Student at an elite girls’ academy

Family: Daughter of the president of the major café chain “Bright Bunny”; twin sister of Natsume Jinja

First appearance: Graduation trip arc (Volume 8, manga)

Voice actress (CV): Reina Ueda

Eru Jinja appears in Koi’s manga Is the Order a Rabbit? as a refined but slightly eccentric rich girl.

She is the daughter of the president of the large café chain Bright Bunny and the twin older sister of Natsume Jinja.

She first meets Cocoa Hoto and her friends on a train heading to the city during the graduation trip arc in Volume 8.

After several chance encounters throughout the trip, she ends up staying at the same hotel, Royal Cats, where they share meals and deepen their friendship.

In the new school year, it is revealed that Eru has enrolled in the same prestigious girls’ school as Syaro Kirima, Maya Joga, and Megumi Natsu.

From that point on, she, her sister Natsume, and Fuyu Fuiba join the story as regular characters.

Her name is believed to be inspired by the soft drink “ginger ale,” which matches the drink-based naming pattern in the series.

Eru has long platinum-blonde hair, even lighter in color than Syaro Kirima’s hair.

Her eyes are reddish-purple and droopy by default, which gives her a gentle look.

When she switches into her “public face mode,” her eyes become sharp and upturned, the exact opposite of Natsume’s transformation.

Her height is 151 cm, the same as Natsume Jinja’s, making the twins perfectly matched in stature.

Among the regular cast, she is the only one who wears a sweater as part of her school uniform by default.

In her private life, she prefers “menhera” or “edgy” fashion styles often associated with darker, more dramatic street looks.

Although her bust and figure are never described directly in the story, her depiction suggests that she has a notably attractive body.

Eru has a bright, honest, and cheerful personality, standing in contrast to her more inwardly twisted and conflicted sister Natsume.

She is naturally straightforward and somewhat airheaded, which leads her to say exactly what she thinks.

Because of this bluntness, she sometimes unintentionally touches on other people’s emotional weak spots or “landmines.”

Her lack of social experience, combined with the skewed money sense of a company president’s daughter, makes her prone to trying to solve social issues with cash.

Eru has a bad habit of pulling out a checkbook whenever she wants to thank someone or make friends, expecting money to smooth everything over.

For example, she tries to let Megumi Natsu write any amount she wants on a check as thanks for playing together, which leaves others bewildered and prompts Natsume to scold her.

She also once attempted to give an extra-large tip to Cocoa Hoto and her friends in maid outfits just so she could become their friend more easily.

These gestures show her genuine desire to connect with people but also how out of touch she can be with ordinary sensibilities.

Despite relying on Natsume a lot, Eru treasures her deeply and worries about depending on her too much.

She feels guilty that she often leans on her sister’s support and occasionally struggles with complex emotions about that imbalance.

Cocoa Hoto, who is also an older sister, is one of the few people who fully sees through Eru’s inner conflict about her role as a sibling.

Through interactions with Cocoa and the others, Eru gradually becomes more emotionally open and confident.

When she first appeared, Eru often had a slightly anxious look and was considered a “cool twin” alongside Natsume.

Over time, as she grows closer to Cocoa’s group, she transforms into a more openly bright and positive presence.

One of her current trademarks is her love for “cute poses”: she frequently throws in peace signs, winks, tongue-out faces, and other intentionally cutesy gestures whenever she spots an opportunity.

This playful “posing habit” has become one of her major charm points.

Eru has developed multiple “modes” of behavior to cope with social situations and her background.

Each mode changes how she acts, speaks, and presents herself to others.

Normal Mode

In her normal everyday mode, Eru is relaxed, friendly, and speaks casually.

She is open to interacting with others, smiles a lot, and shows her natural, easygoing side.

Her money-related oddities, such as casually offering checks or large tips, usually appear in this mode.

So do her spontaneous poses and playful gestures, which make her feel very approachable and slightly chaotic in a fun way.

Public Face Mode

Due to frequent transfers in the past, Eru developed a habit of keeping her distance from people at school.

Her reasoning is that becoming “too close” to others only makes it more painful when she inevitably has to leave them.

At school, she therefore uses a “public face mode,” where she projects a cool, distant aura to keep classmates at arm’s length.

In this mode, she tries to avoid deep interaction, appearing cold, aloof, and unapproachable.

She maintains this façade by always having a book in front of her, using it as a shield to avoid conversation.

Her eyes become sharp and upturned, and she speaks little, giving off a strong “do not disturb” vibe.

Interestingly, she often reads books about psychological manipulation and influence during this mode.

Favorites include titles like “Extreme Psychology Techniques,” “Taming the Heart,” and “Deep Mental Domination.”

She is not just pretending to read them; she genuinely enjoys these books and even enthusiastically recommends them to Yura Karede.

This shows that her interest in psychology and control is part hobby, part defense mechanism.

President Mode

In addition to her normal and public face modes, Eru has a third state known as “president mode.”

This mode appears in situations where her status as the daughter of a company president—and the influence that comes with it—is necessary.

In president mode, her usual looseness disappears, and she becomes sharply focused and strong-willed.

She acts decisively based on what she believes is right, even if it means going against her parents’ wishes.

Her speech patterns also shift; instead of casual language or silence, she switches to polite and formal speech.

This sudden formality, combined with her serious aura, makes it clear that she is drawing on her authority and responsibilities as an heiress.

President mode reveals that beneath Eru’s playful and airheaded exterior, there is a core of conviction and courage.

She is willing to use her status and resources not for ego, but to protect her friends or push for what she believes in.

Natsume Jinja

Natsume Jinja is Eru’s twin younger sister, and the two share the same height and family background.

Despite being the older twin, Eru often finds herself emotionally supported and guided by Natsume.

Eru loves Natsume deeply and values her more than anything.

However, she worries that she relies on her sister too much and feels conflicted about always being the one who is protected.

Their differences are highlighted in several ways: Natsume tends to be more reserved and emotionally complex, while Eru is brighter and more straightforward.

Even their visual changes in public face mode mirror each other in opposite directions.

Both siblings enroll in the same elite girls’ school, where they each pretend to be cool and composed classmates for similar reasons.

Despite these façades, their mutual care is evident, and their bond is one of the emotional cores of Eru’s character.

Cocoa Hoto and Friends

Eru first meets Cocoa Hoto and her circle on a train heading to the city during the graduation trip arc.

Their repeated encounters eventually lead to all of them staying together at the Royal Cats hotel.

At the hotel, they share meals and experiences, and Eru gradually opens up and becomes closer to Cocoa and the others.

Cocoa, in particular, recognizes Eru’s struggles as an older sister, seeing parallels with her own relationship with her younger sister.

Through these interactions, Eru’s initially cool and anxious demeanor softens, leading to her current cheerful, pose-happy personality.

She transitions from a distant “cool twin” into a warm, slightly chaotic rich girl who desperately wants friends.

Rize Tedeza later gives a collective nickname to the group of new students at the elite girls’ academy.

The name “Mame-nae Squad” is derived from the initials of Maya Joga, Megumi Natsu, Natsume Jinja, and Eru Jinja, loosely translating to “Sprout Squad” or “Seedling Squad.”

Megumi Natsu

Among her same-grade peers, Eru interacts particularly often with Megumi Natsu.

Their bond begins when they coincidentally sit in front of and behind each other at a classical ballet performance in the city.

Eru feels an instant connection with Megumi, sensing that their “wavelengths” match.

From then on, the two become both dance partners and friendly rivals.

They share a love for dancing, and their relationship is built on mutual inspiration and playful competition.

Eru’s bright personality complements Megumi’s, and their dynamic becomes a charming part of the academy group’s interactions.

Other Classmates and Characters

At the elite girls’ academy, Eru is in the same class as Maya Joga.

She also attends the same school as Syaro Kirima and Megumi Natsu, placing her firmly within the “academy team.”

Fuyu Fuiba is another regular character who appears alongside Eru and Natsume at the school.

Eru’s combination of public face mode and money-based social misunderstandings initially keeps her somewhat separate from her classmates.

Over time, with help from Cocoa’s extended group, she starts to drop her defenses.

Her relationships slowly shift from distant classmates to genuine friendships, supported by her willingness to take brave stances in president mode.

Eru attends a prestigious girls’ academy filled with highly capable students and fellow heiresses.

However, like Natsume, she is not academically strong.

Her grades hover just above failing level, barely avoiding getting red marks.

Her test results are so poor that Cocoa Hoto calls them “rock bottom,” while Yura Karede describes them as “serious” in a worrying sense.

Even in everyday reading, she reveals weak academic fundamentals, such as misreading the character for “ledger” as “cage.”

These moments emphasize that, despite her elite background, Eru is far from an academic prodigy.

Her struggles with schoolwork humanize her and bring her closer to classmates with similar issues, like Cocoa.

They also contrast humorously with her habit of reading advanced-sounding psychology and manipulation books.

One of Eru’s most distinctive quirks is her belief that money can fix social problems.

She casually offers checks, tips, and financial gestures in situations where emotional understanding would be more appropriate.

This tendency reveals both her sheltered upbringing and her sincere—if misguided—desire to be liked and appreciated.

It also creates comedic misunderstandings and gives Natsume plenty of chances to rein her in.

Her habit of striking cute poses—peace signs, winks, and tongue-out expressions—adds a performative charm to her behavior.

These “too cute” poses are not just for show; they express her joy at finally being able to interact openly with friends.

Her interest in psychology, especially books with titles like “Extreme Psychology Techniques” and “Deep Mental Domination,” hints at a fascination with how people think and feel.

While she reads them partly to support her public face mode, she also enjoys them as genuine reading material.

Beyond the comedy and eccentricities, Eru’s “president mode” showcases her inner strength.

When necessary, she is willing to stand up to adults, including her own parents, and use her position to protect what she cares about.