Sutou Iku is Rentarou Aijou’s ninth girlfriend and the spirited captain of Ohananomitsu High School’s Women’s Baseball Club. A stoic and determined tomboy with a passion for baseball, Iku embodies resilience and grit, never backing down from a challenge—even if it means enduring physical pain. 

Despite her masochistic tendencies, she has a soft side that blossoms when she falls for Rentarou, who supports her dreams and welcomes her into his growing family.

Personality & Appearance

Credits: Bibury Animation Studio

Iku is a tomboy through and through, with short platinum blonde hair, striking purple eyes, and a lean, athletic physique. Her usual attire includes her baseball uniform, showcasing her love for the sport and her role as captain of the team.

Her personality is a mix of stoicism and unyielding determination, driven by a love of self-improvement and a high tolerance for physical strain. Iku pushes herself to her limits with relentless training, often finding pleasure in the pain of her efforts. While her masochistic tendencies can be a bit intense, her passion for baseball and her genuine affection for Rentarou make her an endearing and multi-dimensional character.

Powers & Abilities

• Baseball Mastery
  Iku’s love for baseball fuels her incredible skill in the sport. She tirelessly practices, recruits for her team, and motivates others, making her a natural leader and the heart of her club.
  
  
• High Pain Tolerance
  Iku has an extraordinary ability to endure and even enjoy physical pain. This unique trait enables her to train for hours without stopping and pushes her to achieve feats of endurance most would find impossible.

Trivia

• Iku has kissed Rentarou at least 24 times as of Chapter 180.
• Her birthday, January 9th, is a Goroawase (wordplay) on her name: “I” (1) and “ku” (9).
• Iku’s stoic demeanor is a reflection of her name’s connection to the Japanese word for “stoic” (sutoikku).
• Despite her love for pain, Iku’s devotion to Rentarou shows her softer and more vulnerable side, especially when he supports her dream of reviving the Women’s Baseball Club.