I'm impressed that Marcos is setting his personal differences aside and keeping the bigger picture in mind. Happens rarely in these stories.
At the end of last chapter I expected it to go "I was the culprit all along, mwahaha."
Currently the author is bringing busy evacuate due to the Tsunami hitting Japan announcement and will not be able to update web novel for a while, wish him best luck.
also regards Marcos, which seem different compared to Webnovel.
He still act pretty selfish and prideful toward MC in webnovel around this part,
but Manga already show a bit of Marcos good side earlier than the webnovel.
Marcos will become a permanent best bro, after the next boss fight involving witness Yugo true Heroism which make Marcos realize his noble purpose and fight until his weapon break to save the children.
the characters development in this story is good, a lot of character development for almost everyone aside from worse kind of antagonist.