|(真夏 タイヨウ Manatsu Taiyō?)|
|First Appearance||Earth Engine Open Fire!|
|Japanese Voice Actor||Toshiyuki Morikawa|
Like Daichi Manatsu, Taiyou is a handsome fair-skinned man with spiky black hair and turquoise eyes.
When Daichi Manatsu asked Tsutomu Nishikubo if Taiyou really did die in an accident, Tsutomu responded with "He...your father...was a wonderful Captain", which was prompted by Taiyou's self sacrifice for Earth as he was a captain.
- Hope means believing that the future will be better than today. And real hope can only come from the choices you make. - (Earth Engine Open Fire)
- I'll stop it...because I'm a captain! - (Earth Engine Open Fire)
- Taiyou's surname Manatsu means "real, genuine" (真) (ma) and "summer" (夏) (natsu).
- Daichi Manatsu was told that Taiyou had died in an accident.