I picked the first volume of this series up on a whim and I'm so happy I did.  I was surprised over just how much I actually really enjoyed this book.  Kondou was an unwitting bystander who just wanted to help a girl that looked like was in trouble and found himself suddenly in a fantasy world that didn't know what to do with him.  Since they felt guilty about accidentally dragging him to their world when they only wanted the girl he was trying to help, they offered to provide for him for the rest of his life and instead, he asked for a job.  This is how he finds himself working as an accountant (his choice) again but this time in a kingdom on verge of financial collapse.
At first, Kondou's super excited to be here because not only does he get to flex his brain muscles doing the job he's really, really good at, but this world has potions!  And they work better than energy drinks!  Not only is he able to do more work on less sleep and food, but most of his aches and pains are magically healed by the potion.  Unfortunately, this quickly becomes a problem because it turns out, unlike the girl who was the deliberate target of their summoning spell, Kondou's body is not adapted to handling the magic molecules of this world and he nearly OD's on magic.
And apparently, the best way to solve nearly ODing on magic (and then almost being further killed by a healing spell) is to have sex, hence the start of his relationship with the Knight Aresh.  

Overall there were a lot of elements to this that I really liked and if it weren't for the ending of second volume (FUCKING CLIFFHANGER), I would call this a simple comfort read, where Kondou tries his best to work himself into the grave and Aresh does his best to take care of him whether he wants to be looked after or not.  There is the slowly building up conflict though of Kondou having questions about the way the kingdom has been utilizing it's money and everyone else being super pissed that they are no longer getting the okay stamp to spend the kingdom's money on whatever the hell they want.  I'm definitely going to continue following this because I want to see where it's going.

Lastly... if you're coming here for the smut... in the two volumes I've read, these two have been together exactly once, for essentially forced circumstances, and otherwise have not even kissed.  It's already a slower burn to their relationship than most BL and I'm here for it.