The cannon was shot from the... flintlock? he carried on his waist during transformation.
I had to check twice to see that he didn't use the sword for that tho.
@Remakh
Why should he escape? He has 0 reason to.
He trusts Yona enough to get him out of there and him escaping would just worsen her situation.
Also what are they gonna do to him, execute him? The moment they even dare to declare that is the moment they not only have Yona and the Dragons, but...
So first Arthur got absorbed by Kirby in the cover page and now he upgraded from Plasma Excalibur to Plasma Falchion?
Well, it is a better Dragon Slaying Weapon.
Just to correct the mistake on page 3: Its not Scheize but Scheiße, the ß produces a "double s" or "sz" sound and in caps would also turn into a SS, because ß doesn't really exist as a capital letter.