Daisuke Shima  

Mark Venture, Venture, 島 大介

Shima, who serves as chief navigator and helmsman for susumu kodai's best friend, is more reserved and composed than his friend. although he possesses great skill in controlling the yamato, he struggles with low self-confidence. despite this, shima has saved the ship on numerous occasions. in the first series, shima frequently disagrees with kodai, sometimes resulting in physical altercations. however, these conflicts ultimately strengthen their friendship. in the second season, shima falls deeply for teresa of telezart through interstellar radio communication. although she chooses to remain on her planet amidst the comet empire's threat, shima pledges to continue fighting in her name.