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Career Human Home planet Land Gender MasculineMale Age 17 [Notes 1] Hair color Brown Black (Anime) Eye color Brown

Okarun is a short, thin-built teenager with brown hair (black in the anime), brown eyes, and wears round-framed glasses. Okarun's hair was originally cut in a bowl cut, but has since become unruly after his confrontation with the Flatwoods Monster and is considered to be of average appearance. While she is one of the few characters that can be seen wearing a variety of outfits, her most common outfit is her school uniform, which is a typical gakuran outfit.

Athletics: As a result of the many paranormal obstacles he had to overcome, Okarun boasts a great physical condition that is on par with an athlete. During a fitness test, he completed a 50-meter sprint in just 5.8 seconds, beating his own expectation of 9 seconds, threw a handball 35 meters, reached 3.6 meters in the long jump from a standing position, managed to take 80 steps in the sidestep test, and completed 120 shuttle runs. Overall, he outperformed the rest of his class and still maintained more stamina than them.