Not only cringey but this chap is also corny... Just imo... Makes me wonder why many readers seemed to be satistified with this arc's ending... Not to mention how weak and bland the conclusion of the fight... *sigh*
Normally I'd call this rushed and/or asspulled but I feel this story had made it fairly clear before that it wasn't really about the badass fights but rather about the emotional beats attached to the main character, and in that sense this chapter delivered perfectly.
@Vincentius, no ... thats wrong.
The Grail is simply a container of mana , it got "corrupted" in the 3rd Grail War because someone tried to cheat and thus something that wasnt meant to be there, was there and broke many rules.
Also Angry Manjaw is ... complicated and I really cannot say much without spoiling the crap out it.