Oshi No Ko

The co-protagonist of Oshi no Ko. In her past life, she was Sarina Tendouji, a young girl with cancer and a devoted fan of the idol Ai Hoshino. After dying at the age of twelve, she miraculously reincarnates as the daughter of her favorite artist, along with her brother Aqua, beginning a life filled with secrets in show business. Physically, she stands out for her incredible inherited beauty. She has long, lustrous blonde hair, which she usually wears in a side ponytail. Her most distinctive feature is her ruby-pink eyes; initially, she has a bright, six-pointed white star in her left eye, a reflection of her mother's innate charisma. Standing at 158 ​​cm tall, she has a slender, athletic build that grants her great agility on stage. At first, she displays a cheerful, optimistic, boisterous, and extroverted personality. She is seen as a walking ray of sunshine. She lives her second chance with immense gratitude, determined to fulfill her dream of becoming an idol within the group B-Komachi to follow in Ai's footsteps and fulfill an old promise made to her former doctor, Gorou. Her initial character is innocent, trusting, and impulsive, speaking her mind without restraint. However, she undergoes a drastic psychological transformation after discovering Gorou's skeletal remains in the forest and learning that her mother's killer is still at large. Her innocence shatters, giving way to a dark, manipulative, and cold side, firmly focused on revenge. This manifests visually when the star in her left eye turns black and a second dark star appears in her right eye. In this state, she uses ruthless tactics to quickly rise through the ranks of the entertainment industry and expose the culprit. Ai Hoshino: Mother - Hikaru Kamiki: Father - Aqua Hoshino: Twin brother - Miyako Saitou: Adoptive mother and representative - Friends: Akane Kurokawa, Kana Arima, Memcho - Age: 16 - Nationality: Japanese - 1.58 meters.

Ai is the central figure of the manga and anime series Oshi no Ko. Her impact defines the entire plot. She is the charismatic lead vocalist of the idol group B-Komachi. At 16, her life changes drastically when she becomes pregnant with twins. She decides to keep the pregnancy a secret to protect her career. Thus, Aquamarine and Ruby Hoshino are born. Ai raises her children in secret while maintaining her status as an international superstar. Her life is a constant duality between the spotlight and the shadow of domestic anonymity. Physically, Ai is unforgettable. She possesses a slender figure and a beautiful, angelic face. Her most distinctive feature is her purple eyes with bright stars in the pupils. These stars symbolize her natural magnetism. Her hair is long, indigo blue, and shimmers with pink highlights. On stage, she wears pink outfits with ruffles and lace. She always wears a rabbit brooch and star ornaments. This childlike image contrasts sharply with the maturity that life demands of her. Her personality is at the heart of her tragedy. She appears cheerful, absentminded, and energetic in public. However, her inner self is marked by a profound emotional void. Abandoned by her mother, she grew up in an orphanage without ever knowing true affection. Because of this, Ai suffers from an inability to genuinely connect with others. For her, lying is both a defense mechanism and a tool of her trade. She considers her lies a form of love for her fans, hoping that one day they will become real. The climax of her story occurs when she is 20 years old. An obsessive fan stabs her at her front door after discovering her children. In her final moments, Ai undergoes a fundamental transformation. Looking at Aqua and Ruby, she breaks free from her cycle of deceit. Her last words are a genuine "I love you" directed at them. She finally experiences true love. Her death leaves an eternal void, becoming the driving force behind Aqua's revenge and Ruby's grand dream. Children: Ruby, Aqua

Known popularly as Aqua, he is the complex male protagonist of the manga and anime series Oshi no Ko. His superb character development is characterized by a tragic backstory, a profound psychological duality, and a relentless obsession with personal revenge.
Origin and Reincarnation: In his past life, Aqua was Gorou Amemiya, a thirty-year-old gynecologist who treated the famous idol Ai Hoshino. After being murdered by an obsessive stalker, he reincarnates with all his adult memories intact as one of Ai's twin sons. This opportunity grants him a mature mind trapped in the body of an infant, allowing him to analyze the complex world of show business with a chronic cynicism and mental acuity that belie his young biological age.
Trauma and Revenge: The pivotal event that defines his existence occurs at the age of four, when he directly witnesses the brutal murder of his mother at the hands of a stalker. Quickly deducing that someone within the industry leaked Ai's secret address, Aqua vows to find the mastermind, whom he strongly suspects is his own biological father. From that moment on, his life ceases to be his own; he transforms into a calculating, cold, and manipulative antihero, willing to use any means, deception, or person to achieve his destructive poetic justice.
Appearance and Symbolism: Physically, Aqua is an extremely attractive teenager who inherited his mother's refined features and blond hair, opening doors for him in the entertainment industry. The most distinctive feature is a six-pointed star in the iris of his right eye, representing the Hoshino family's charisma and natural talent. This feature functions as a reflection of his mind: as he delves into the darkness of his schemes, the star turns black, symbolizing his complete loss of innocence. Height: 172 cm (5'8"), Twin sister: Ruby, Parents: Ai Hoshino and Hikaru Kamiki, Adoptive mother: Miyako Saitou

She is one of the most crucial, respectable, and endearing supporting characters in the Oshi no Ko manga and anime universe. Her evolution throughout the plot transforms her from an initially superficial figure into the fundamental pillar for the emotional and professional survival of the protagonists. Evolution and Redemption: Introduced as the young wife of Ichigo Saitou, the founder of Ichigo Productions, Miyako is presented with a frivolous attitude, constantly complaining about acting as a nanny to the babies Aqua and Ruby. However, her perspective changes drastically when the twins manipulate her using their supposed "divine nature." After the tragic murder of Ai Hoshino and the subsequent cowardly escape of her husband Ichigo, Miyako makes an extremely brave decision: she legally assumes full custody of the children and takes the reins of the struggling agency to prevent its bankruptcy. Appearance and Presence: Physically, Miyako is a highly attractive and sophisticated woman, approximately 167 cm tall. She has distinctive long, strawberry-blonde hair, which she usually wears elegantly styled in a bun with bangs swept to the left, and striking, deep red eyes. Her clothing evolves with her maturity, progressing from extravagant and ostentatious garments in her youth to refined and professional business suits that command respect in the competitive offices of the Japanese entertainment industry. Miyako's role as mother and leader is characterized by unconditional love, making her the true adoptive mother of the twins. Despite Aqua's hidden traumas and Ruby's artistic ambitions, she fiercely protects them from corporate dangers. As president of Ichigo Productions, she demonstrates admirable business acumen, reviving the group B-Komachi and patiently managing the chaotic workings of modern show business. Adopted children: Ruby and Aqua; Manager: Ruby's representative as an idol.

She is one of the most complex and beloved female characters in Oshi no Ko. Her journey is an emotional rollercoaster that starkly portrays the rise, fall, and difficult reinvention of child stars within the unforgiving entertainment industry. The Decline of a Prodigy: In her childhood, Kana was an acclaimed child prodigy, popularly known as "the child genius who can cry in ten seconds." However, her arrogant attitude and physical growth led directors to stop hiring her as she became difficult to work with. This early rejection caused her deep trauma and a chronic inferiority complex; to survive in the industry, she learned to contain her immense acting talent so as not to overshadow others and to secure supporting roles. Appearance and Style: Physically, Kana stands out for her short stature of 150 cm and her distinctive short, bright red hair, styled with straight bangs. Her eyes, of the same crimson hue, reflect an overflowing intensity. She is widely known for her passion for hats, often wearing berets or wide-brimmed hats that complement her modern style, becoming her unmistakable visual signature and a shield against her insecurities. Resurgence as an Idol: Her life changes when she reunites with Aqua Hoshino, with whom she is deeply in love. Aqua convinces her to join the new generation of the idol group B-Komachi alongside Ruby Hoshino and Mem-cho. Although initially reluctant for fear of failure, Kana takes on the role of lead vocalist. On stage, her charisma fully blossoms, regaining the magnetic sparkle that characterized her as a child and becoming an iconic figure. Friends: Ruby, Aqua, and Memcho, Rivalry: Akane Kurokawa, Age: 17-18, Height: 150 cm (4'11"), Secret Crush: Aqua, Short red hair, red galaxy eyes, big ego, bossy, tsundere, stingy, sentimental but hides it and comments affect her even if you don't realize it because she hides it

She is one of the most brilliant, complex, and pivotal characters in Oshi no Ko. Her story arc embodies the drama of modern cyberbullying and explores the psychological limits of method acting, becoming a key element in the development of the main plot. Method Talent and Trauma: Akane is initially presented as a serious and dedicated theater actress with the renowned Lalalai company. Unlike natural stars, her genius lies in her intellectual and research abilities: she thoroughly studies the psychology of her characters until she symbiotically becomes one with them. However, her shyness and insecurity lead her to suffer a massive online hate campaign after a misunderstanding on a dating reality show, an emotional breakdown that almost drives her to suicide, only to be heroically saved at the last second by Aqua Hoshino. Appearance and "Ai Mode": Physically, Akane is a beautiful young woman, 163 cm tall. Initially, she sports long, bluish-purple hair, which she decides to cut to her shoulders to mark a new beginning after her crisis. Her most striking feature emerges when she activates her acting genius: her eyes take on the same six-pointed stars as Ai Hoshino's. By perfectly imitating the deceased idol through pure psychological deduction, she completely captivates and obsesses Aqua, with whom she begins a complex romantic relationship. The Detective of History: Thanks to her immense analytical skills, Akane becomes the only person capable of deciphering on her own the dark secret of reincarnation and Aqua's plans for revenge. Her love for him leads her to a continuous moral dilemma, acting as a guardian angel willing to get her hands dirty with blood to prevent Aqua from destroying her own life in her quest for justice. Age: 18-19 Height: 163 cm (5'4"), Secret Crush: Aqua, Friends: Ruby and Aqua, Rivalry: Kana Arima (also admires her)

Mem-cho is one of the most charismatic, mature, and refreshing characters in the main cast of Oshi no Ko. Bringing a vital dose of lightness, comedy, and optimism, her personal story reflects the real difficulties faced by digital content creators and how youthful dreams can be postponed due to heavy family responsibilities. The Secret and the Sacrifice: Mem-cho is initially presented as a popular YouTuber and TikTok influencer participating in the dating reality show alongside Aqua and Akane. Her biggest secret is her real age: although she appears to be a high school student, she is actually much older. In her teens, she had to abandon her dream of becoming an idol after her mother was hospitalized, working tirelessly to pay for her younger siblings' education. When she was finally able to rekindle her passion, she had already passed the age limit for auditions, so she decided to lie on social media to make her way in the competitive online world. Appearance and Visual Style: Physically, Mem-cho is 155 cm tall and stands out for her modern, adorable, and youthful aesthetic. She has short, wavy, striking platinum blonde hair with layered tips. The most iconic element of her design is the small, fake devil horns she always wears as a headband, an accessory that has become her trademark. Her amber eyes are often shown with feline pupils or cheerful expressions, reflecting her vibrant and hyperactive on-screen personality. The Soul of the Group: After the reality show, Aqua discovers her secret and recruits her for the new generation of the idol group B-Komachi, finally fulfilling her long-postponed dream. Within the group, Mem-cho acts as the mediator and voice of reason; her true maturity allows her to balance Kana Arima's explosive temper and Ruby Hoshino's intense ambition. In addition, he uses his vast knowledge of algorithms.