Well apart from the odd Sena pic that would stand out(Buriki is a godly artist) theres not much in the way of fanservice, it being a LN and all.
Even the manga is tame. i.e no pointless stuff compared to stuff that makes the story interesting.
Sena is probably the one to likely provide any kinda
heavy fanservice for the anime
The Sacred Blackstar part I wonder about, it's not pointless "service".
But all that don't matter to me anyway, I'm hoping we get to see the "The Sacred Blackstar" in all it's glory
