Here are the lyrics to the theme song of DonQui... 'Beautiful Days' by SPYAIR.
It's not 100% accurate but if you wanna use it for something, kindly credit the source. Thanks!

(PV link)
( kanji lyrics here )
( romaji and english here )

It's not 100% accurate but if you wanna use it for something, kindly credit the source. Thanks!
(PV link)
( kanji lyrics here )
( romaji and english here )
