Man I barely remember these characters. All I remember about that Professor Oz is that he's secretly a freak, and the two at the end even less so. Regarding the old story, if you travel across the land and find a country of bad guys, and then after defeating them you go across the damn ocean...
Personally I don't mind the extra detail in the manga adaptation. The anime already skips so much stuff that there would be too much missed from the story and it would feel super disjointed.
Just say yes Leon, for fucks sake. When they come to tell you that they've arranged a marriage between you and Angie, with Olivia as a concubine. Just. Say. YES.
Ah, I did miss that, though my point still technically stands because they say her old name was Thunder Sword and it's changed to Quick Thunder. It would make more sense for them to say that her name changed from Lightning Blade to Quick Lightning.
Man all the girls in this series are so cute. Though wasn't Helen's nickname Lightning Blade? I can understand how the translation might get construed to Quick Thunder but personally I think Lightning Blade sounds cooler.
A mysterious door that nobody has been able to open since the first king. The door opens for Ain. Ain reads an unfinished book on a desk next to a pen. "Is this the first King's diary!?" Yea no shit, what else would it be?