BL continued to expand across all the major publishers this year (as well as a number of digital ones), and I guess it was inevitable that we would find the intersection between BL and the monster-based romances of late.
MONSTER AND THE BEAST (Bakemono to Kedamono), by Renji. First published in 2017 and first published in North America in 2019.
PLOT:
Deep in the woods, a man once met a monster. Cavo was a demon with a pure heart, who only longed for a little kindness. Liam was a middle-aged cad who wasn't particular about who his partners may be, so long as he can enjoy his freedom. The two become travelling companions, and as Cavo spends more time with Liam he discovers feelings he never thought he could feel for another.