Movie
Description
Hyakume operates as the Bentenmaru's radar and sensor specialist, overseeing vessel detection systems and scrutinizing technical data. His appearance includes dark brown hair with a slight beard and mustache, a scar above his left eye, and a signature ensemble of a tilted red headband, light blue scarf, and maroon fingerless gloves. Manga portrayals depict him with light grey hair, clad in the standard crew suit featuring a blue jacket with circular shoulder indentations.

Personality-wise, he exhibits a consistently friendly disposition, often displaying amusement and delivering meticulous technical explanations. During downtime, he constructs model ships and joins crew gatherings for card games and scotch drinking.

In the Golden Ghost Ship arc, he analyzes spatial anomalies through sensors, verifies data to identify Princess Gruier Serenity, and aids in breaching protected observation buoy networks. He accompanies the boarding party onto the ghost ship, supplying electronic support and environmental assessments.

Throughout the Hakuoh Pirates arc, Hyakume contracts a virus from escaped cat-monkeys alongside the crew, leading to isolation. While confined, he builds model ships and collaborates urgently to draft an operational manual when the Hakuoh Academy yacht club attempts to seize the Bentenmaru, voicing concerns about potential system failures. He later monitors their activities remotely.

During *Abyss of Hyperspace*, he conducts sensor sweeps during the raid on the liner Begin The Beguine, detects pursuing warships after Kanata Mugen's rescue, tracks subspace turbulence disrupting navigation, and examines energy signatures tied to Professor Mugen's legacy. His technical skills bolster the crew during encounters involving the Flint system and subspace distortions.

No concrete details exist about his background or origins beyond joining the Bentenmaru crew at an unspecified time. His character evolution emerges through sustained technical competence and increasing integration into crew operations across recorded incidents.