TV-Series
Description
Iku Sutō is a first-year high school student and the ninth girlfriend of Rentarō Aijō. She attends Ohananomitsu High School, where she is a member of the girls' baseball club and is in a different class than Rentarō. Her birthday is January 9, and her name is a play on the Japanese pronunciation of the word stoic, which reflects her core personality trait of enduring hardship. She has short, light-colored hair, thick eyebrows, and purple eyes, and she typically wears her school uniform with practical spats underneath her skirt. She refers to herself using the boyish pronoun boku, contributing to her overall tomboy image.
Iku is an energetic, bright, and extremely social person who naturally brings energy to a group. Her personal philosophy is that failure is simply proof of not having worked hard enough, and she lives by this creed with an almost terrifying dedication. This devotion to effort has warped into a distinct and pronounced masochistic tendency. She derives genuine joy and pleasure from situations that are physically painful, mentally taxing, or emotionally difficult, often exclaiming her trademark phrase "That's so rough…♥" with heart-shaped eyes when experiencing such conditions. She loves brutal training regimens, terrifying horror movies, and the most punishing difficulty modes in video games. However, her masochism has boundaries; she primarily enjoys hardship that is framed as a challenge or training and is less interested in pain that is truly cruel, pointless, or would cause genuine suffering to others.
Despite her love of pain, Iku harbors insecurities about her boyish appearance and often feels that feminine clothing does not suit her, becoming flustered by direct romantic or sexual teasing. Her way of speaking is casual and energetic, befitting a dedicated athlete, and she addresses her fellow girlfriends who joined before her as senpai, showing a sports-team-style respect for seniority.
As a player on the girls' baseball team, Iku is a highly skilled pitcher and hitter. Her training regimen is so excessive that her muscles are described as being in a constant state of agony, yet she possesses superhuman stamina and pain tolerance as a result. Her physical resilience is so great that other characters have called her a monster or undead. She is capable of performing over 100,000 practice swings without stopping, and she often acts as a shield for others in chaotic situations, eagerly volunteering for the most dangerous or painful tasks.
Iku's central role in the story begins when she is trying to save her school's girls' baseball club from being disbanded. The other eight members had all left to study baseball in America, leaving her as the sole member. Desperate, she spends her time recruiting for temporary players when she makes eye contact with Rentarō, which triggers their fated meeting. He initially helps her with recruitment demonstrations, and she quickly falls in love with him. When she confesses, Rentarō pretends to reject her, correctly guessing that she would enjoy the pain of a broken heart, but he immediately recants and accepts her, unable to bear his own falsehood. After joining the Rentarō Family, she brings her athletic energy and unique masochistic perspective to the group's many adventures.
A key part of Iku's backstory involves a trauma related to baseball. In the past, she hit a home run that accidentally struck a spectator, injuring her. This event caused her to freeze up and be unable to swing the bat properly during games due to the fear of hurting someone again. With the support of Rentarō and the other girlfriends, she is eventually able to overcome this trauma during a crucial practice game, reclaiming her full power at the plate.
Iku has several notable relationships within the Rentarō Family. She shares a particularly symbiotic dynamic with Rin Baio, a girl who loves violence. Together, they form a self-sustaining ecosystem of pain and roughness, with Rin happily providing the violence that Iku craves. Her relationship with the doctor girlfriend, Moegi Momiji, is also unique, as Momiji's massages can completely heal Iku's overworked muscles. While this would be a relief for anyone else, Iku finds this loss of her beloved soreness to be a profound despair, leading Kurumi Haraga to joke that she is like a monster who takes damage from healing spells. Her relationship with Rentarō is one of deep respect and care; although he cannot be cruel to her, he devises ways to give her the feelings of hardship she enjoys while genuinely supporting her athletic ambitions and personal growth.
Throughout the series, Iku develops by learning to balance her extreme masochistic tendencies with her role in the family and her own self-acceptance. While she remains a dedicated athlete and a cheerful masochist, she confronts her past trauma and grows more confident in her relationships, even as she continues to find joy in the rougher aspects of life. Her notable abilities extend beyond baseball to an almost supernatural capacity for enduring punishment, both physical and emotional, making her one of the most resilient members of the family. She is also known for seemingly being able to produce a baseball bat from anywhere, specifically for the purpose of having others hit her with it, a practice she refers to as butt bat.
Iku is an energetic, bright, and extremely social person who naturally brings energy to a group. Her personal philosophy is that failure is simply proof of not having worked hard enough, and she lives by this creed with an almost terrifying dedication. This devotion to effort has warped into a distinct and pronounced masochistic tendency. She derives genuine joy and pleasure from situations that are physically painful, mentally taxing, or emotionally difficult, often exclaiming her trademark phrase "That's so rough…♥" with heart-shaped eyes when experiencing such conditions. She loves brutal training regimens, terrifying horror movies, and the most punishing difficulty modes in video games. However, her masochism has boundaries; she primarily enjoys hardship that is framed as a challenge or training and is less interested in pain that is truly cruel, pointless, or would cause genuine suffering to others.
Despite her love of pain, Iku harbors insecurities about her boyish appearance and often feels that feminine clothing does not suit her, becoming flustered by direct romantic or sexual teasing. Her way of speaking is casual and energetic, befitting a dedicated athlete, and she addresses her fellow girlfriends who joined before her as senpai, showing a sports-team-style respect for seniority.
As a player on the girls' baseball team, Iku is a highly skilled pitcher and hitter. Her training regimen is so excessive that her muscles are described as being in a constant state of agony, yet she possesses superhuman stamina and pain tolerance as a result. Her physical resilience is so great that other characters have called her a monster or undead. She is capable of performing over 100,000 practice swings without stopping, and she often acts as a shield for others in chaotic situations, eagerly volunteering for the most dangerous or painful tasks.
Iku's central role in the story begins when she is trying to save her school's girls' baseball club from being disbanded. The other eight members had all left to study baseball in America, leaving her as the sole member. Desperate, she spends her time recruiting for temporary players when she makes eye contact with Rentarō, which triggers their fated meeting. He initially helps her with recruitment demonstrations, and she quickly falls in love with him. When she confesses, Rentarō pretends to reject her, correctly guessing that she would enjoy the pain of a broken heart, but he immediately recants and accepts her, unable to bear his own falsehood. After joining the Rentarō Family, she brings her athletic energy and unique masochistic perspective to the group's many adventures.
A key part of Iku's backstory involves a trauma related to baseball. In the past, she hit a home run that accidentally struck a spectator, injuring her. This event caused her to freeze up and be unable to swing the bat properly during games due to the fear of hurting someone again. With the support of Rentarō and the other girlfriends, she is eventually able to overcome this trauma during a crucial practice game, reclaiming her full power at the plate.
Iku has several notable relationships within the Rentarō Family. She shares a particularly symbiotic dynamic with Rin Baio, a girl who loves violence. Together, they form a self-sustaining ecosystem of pain and roughness, with Rin happily providing the violence that Iku craves. Her relationship with the doctor girlfriend, Moegi Momiji, is also unique, as Momiji's massages can completely heal Iku's overworked muscles. While this would be a relief for anyone else, Iku finds this loss of her beloved soreness to be a profound despair, leading Kurumi Haraga to joke that she is like a monster who takes damage from healing spells. Her relationship with Rentarō is one of deep respect and care; although he cannot be cruel to her, he devises ways to give her the feelings of hardship she enjoys while genuinely supporting her athletic ambitions and personal growth.
Throughout the series, Iku develops by learning to balance her extreme masochistic tendencies with her role in the family and her own self-acceptance. While she remains a dedicated athlete and a cheerful masochist, she confronts her past trauma and grows more confident in her relationships, even as she continues to find joy in the rougher aspects of life. Her notable abilities extend beyond baseball to an almost supernatural capacity for enduring punishment, both physical and emotional, making her one of the most resilient members of the family. She is also known for seemingly being able to produce a baseball bat from anywhere, specifically for the purpose of having others hit her with it, a practice she refers to as butt bat.