I am not affiliated with the games or its composer in any way and I highly encourage you to buy yourself! Video footage taken from : • Let's Play Octopath Tr...
This sounds like it could be a fighting game main menu theme when you unlock everything. (Ex: Smash Bros, Dissidia, Tekken, Shounen Jump Ultimate Stars, etc)
You cooked with this fr, this could definitely be switched in for the Smash Ultimate menu theme and there's only like one small section that would really even be that different
The first time I’ve heard it was going for Themenos, Hikari and Ochette pre-Last Chapters. But i was expetting to hear it only on lv45 areas. Besides this the battle theme that tell you that you have reached the endgame of Octopath Traveler II and now you have to face all 8 final bosses!
When I heard the theme for the first time, I immediately thought of his work on the Romancing Saga franchise. The trumpets and some progressions are sooooo similar it's insane