Naisho Kyouko Nee-san

Kyouko Shinonome is widely recognized as the most formidable delinquent girl at her school, yet she commands far more than mere fear. With her flawless appearance, magnetic personality, and impressive array of talents, she has effortlessly earned the admiration of everyone around her. To her peers, she is the ideal older sister figure—someone who embodies perfection in every conceivable way and naturally draws people to her side. However, behind this pristine reputation lies a deeply guarded truth that Kyouko cannot afford to reveal. The secret she harbors threatens to shatter the flawless image she has so carefully cultivated. Beneath the confident exterior of the school's strongest girl beats the heart of someone hopelessly devoted to one specific person: her younger brother, Ayu. This hidden affection forms the core of Kyouko’s daily dilemma. She must constantly navigate the expectations of those who look up to her while desperately concealing the intense love she feels for her sibling. Balancing her untouchable status with an emotion she can never let anyone discover, Kyouko walks a delicate tightrope where a single misstep could expose the profound secret she keeps locked away from the rest of the world.