This anime is an isekai with romance, Flio and Fenrys' romance is very quick.
What did I find?
Well, this anime does have action, the action isn't very good, the powers are just very simple, which was to be expected from the staff.
I got a little bored, because the action itself is not that good, and all the fights and action scenes don't even last a whole episode, so if you go for this anime, go for the romance, the action isn't that good.
about the couple:
flio(banaza): banaza is flio's real name, he is a cliché isekai protagonist, who goes out into the world, and is very strong (even though he doesn't seem like it), and who hates fights, fighting, violence in general.
fenrys: flio's love interest, she serves the demon lord, and fights with flio before falling in love.
That's it, and oh, I almost forgot, there are also other heroines, who are not romantically interested in Flio, but who appear almost throughout the anime.