Eishiro Sugata presides over the New World Discovery Club, an organization devoted to unraveling the secrets of uncharted domains. His stoic composure and razor-sharp intellect enable him to dismantle intricate mathematical puzzles and dissect convoluted scenarios effortlessly. A resourceful survivalist, he sustains a solitary life in a riverside tent, periodically clashing with wildlife such as bears. His relentless pursuit of discovery traces back to personal tragedy: born into a politically influential family, he faced disownment following his elder brother’s fatal hang-gliding accident, fueling his quest for the "New World" as penance. Though reserved, he sporadically partakes in pranks orchestrated by others, inevitably drawing sharp admonishments from Mikako Satsukitane, his childhood friend linked to him through a bond deeper than mere camaraderie. Renowned as the "strongest middle school student" for his academic brilliance and combat proficiency, he paradoxically harbors a ravenous appetite, famously conquering an eating challenge involving mountains of oversized curry plates. Later depictions, including a spin-off manga six years post-main events, portray him as a university student persistently probing unexplained phenomena, underscoring his unyielding commitment to mystery-solving. In the OVA *Project Pink*, he navigates chaotic group escapades with characteristic analytical precision, his unflappable demeanor intact. Across all narratives, his evolution remains anchored in steadfast loyalty to exploration, devotion to allies, and subtle emotional growth fostered by peer interactions.