Nijigen is a quirky university student, famous among his friends for his deep love of fictional, two-dimensional characters. He grew up in a tough environment with his older sister, who is an interior craftsman and rules the family business with an iron fist. The trauma from growing up in a shared, curtain-divided room, plus his sister's constant pranks, shaped how he views the world. After a disheartening experience at a school event, he decided to reject real-life romance and fully embrace his ideal of a perfect, imaginary girlfriend. Eventually, his story takes a turn when he starts dating his junior, Aki.
Nijigen’s physical appearance is not heavily described. His most notable feature is his normal, college-boy look, which contrasts sharply with his vivid imagination of ideal, beautiful, fictional girls.
He is imaginative, friendly, and sometimes a bit dramatic.
Nijigen often escapes into his own head, where he interacts with his dream girlfriend.
Despite being troubled by real-life relationships, he is loyal and caring to his friends.
He is also a bit bashful, especially about his past nicknames.
Nijigen grew up in a small town where his family runs a local factory.
His older sister is known as the "Ogre Sister" because of her tough love and mischievous attitude.
He and his sister shared a bedroom until high school, separated only by a curtain.
Years of his sister’s pranks left him with some childhood trauma.
His education is possible thanks to his sister, who works hard and sends money home even though the family business struggles.
Because he feels indebted to her, he rarely complains.
Nijigen is good friends with Banri Tada and often joins him in university activities.
He is known by the nickname "Nijigen-kun" among his friends, a playful nod to his love for fictional girls.
In high school, he was called "Satotaka," a nickname he never liked.
He meets Aki, a junior in his high school days, and Aika, a girl interested in "boys' love" stories, during the special story "Nijigen-kun Special".
After the incidents in "Nijigen-kun Special," he confesses his feelings to Aki and they start dating.
Childhood and Family Struggles
Nijigen spent his childhood sharing a cramped room with his older sister, only separated by a curtain.
His sister often played mischievous pranks on him, causing many small traumas.
The family business struggled, but thanks to his sister’s financial support, he could continue attending school.
Creation of His Ideal Girlfriend
During his later school years, Nijigen began to imagine the perfect two-dimensional girlfriend in his mind.
Without realizing it, he based some of her personality traits on his own sister, except for her appearance.
Turning Point at the Tea Ceremony Club
At university, Nijigen and Banri Tada joined the tea ceremony club.
During a welcome party, he felt disappointed about real-life girls.
This event led him to declare that he would only pursue happiness with fictional girls from then on.
Adventures in "Nijigen-kun Special"
In the side story "Nijigen-kun Special," Nijigen is the main character.
He meets his junior, Aki, and a classmate, Aika, who is into boys' love manga.
The story explores his struggles between the world of fiction and reality.
A New Romance
After the events of "Nijigen-kun Special," Nijigen gains the courage to confess to Aki.
Aki accepts his feelings, and they become a couple.
His nickname "Nijigen-kun" means "Two-dimensional Boy" because of his passion for fictional characters.
He never liked his high school nickname, "Satotaka."
Even though his love for fictional characters is legendary among his friends, Nijigen learns there is happiness to be found in real-life connections, too.
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