Description:

Readyyy! is Sega's male idol training smartphone game. Within it is a 4-unit group called Maten Rocket. This is their official music video for their Kimi ga Mita Sora wa song. Maten Rocket is the fifth and final unit that received a MV. (Source: Readyyy Project Wikia)

Alternative Titles:

キミが見た空は, Readyyy!, Maten Rocket