Fourth installment in the Skyhigh series.
Prequel:
Skyhigh - Shinshou ( http://www.batoto.net/comic/_/comics/skyhigh-shinshou-r1366 )
Sequel:
Skyhigh [hévәn] ( http://www.batoto.net/comic/_/comics/skyhigh-h%C3%A9v%D3%99n-r11468 )
Skyhigh IV
