Oh hey, another specimen of the very rare BL isekai. I'll definitely give it a try once there's more of it.
(I'm actually if anything surprised at how little isekai BL it is, given that how isekai tropes have crept into everything else by now. Is it because the principal attraction to isekai is self-insertion as the protagonist, whereas BL is, for many, about watching from the sidelines...?)
Anyway I for one welcome this development. I've long given up on isekais dying out and going away, after all XD