Ren Shibusawa holds the position of student council vice-president at Kamogawa North High School, distinguished by short pink twin-tails and matching eyes that complement her narrow-eyed, self-centered demeanor. A relentless perfectionist, she exhibits little patience for those she considers unserious, resorting to calculated tactics like feigning tears with eye drops to manipulate outcomes.

Her academic partnership with Midori Ono began in middle school, fueling her determination to reunite in the student council, convinced their synergy guarantees unparalleled efficiency. This resolve falters when Midori reveals her ambition to design board games—a pursuit Ren initially deems frivolous. Their clash reaches a turning point during a 6 Nimmt! match, where Midori’s strategic ingenuity illuminates the intellectual richness of game design, dismantling Ren’s dismissive stance.

Ren’s dynamic with student council president Yuto Aoshima exposes unexpected vulnerability. After Yuto withdraws from festival planning, she shoulders heightened responsibilities, confronting her rigidity and gradually embracing adaptability. This shift nurtures a more empathetic leadership style, though her sharp pragmatism persists.

Her journey traces an evolution from prioritizing control and efficiency to cautiously valuing creativity’s role in achievement. Despite this growth, her core identity remains rooted in results-driven precision, balancing newfound collaboration with unyielding standards.