Chris Floret, a second-year graduate student at Saitama University’s Biological Sciences Research Center, balances a composed demeanor with undercurrents of protectiveness toward his longtime girlfriend, Suiu Fujiwara. His blond hair, brown eyes, and signature glasses-and-lab-coat attire mirror his analytical focus on decoding love’s biological mechanisms, a specialization rivaling Yukimura’s own research. While openly affectionate with Suiu, a flicker of jealousy surfaces when other men engage her attention, adding complexity to their otherwise steady bond. Their relationship, marked by synchronized teamwork during group outings with Yukimura and Himuro, becomes a silent counterpoint to the protagonists’ uncertain romantic maneuvers. In Season 2, Chris intervenes in Kanade’s emotional quandaries, dissecting her struggles through a scientific lens. His debut scene dissects cytosine’s role in emotional attachment, using his dynamic with Suiu as a living experiment to probe Yukimura and Himuro’s tentative rapport—a catalyst for Yukimura’s subsequent quest to quantify their connection. Beyond academic theorizing, Chris subtly underscores the narrative’s tension between empirical analysis and raw emotional honesty. His secure partnership with Suiu persists as a stabilizing force, contrasting the central duo’s evolving trials and anchoring the series’ examination of love as both measurable phenomenon and unpredictable human experience.