Oh. Considering the source, it's a pretty damn good spin-off.
Spoiler:
Actually, you can chalk it up to Reki's cameos being often enough for me to feel satisfied.
Fuuma's presence is welcome, too. And if I may, I'd like some more Riko... goodness, I forgot how I liked some of HnA's girls
Ahem. And yes, just like always it's easier to look at competent tsunderes when they're away from their dumbness-inducing idiots.