Thread:BGMaxie/@comment-5916303-20160828215710/@comment-4800771-20160829220745

Sorry for interrupting when a case is closed. I have seen other mangakas and authors actually spelling out where they pull their references, an exact name. Also that image you posted never stated if he based the Imperial Arms on RPGs. He was talking about Danger Beasts and how harvesting it led to making Imperial Arm.

In that image of volume 5

"And there you have it, a full rundown on Danger Beasts. You can also just think of Danger Beasts as the same types of monsters that show up in RPGs. I don't mind."

It might not be Final Fantasy. It might Monster Hunter Tri, a very popular game in Japan with similar mechanics. I won't post that in Trivia because it's speculation.