Lennon is Book Five in the Ember Town series.
Lennon went lone wolf after his pack kicked him out for being gay, but a mysterious corporation offered him a job helping to organize their interests - something he is very good at. When his employer brings him to Ember to help handle their conservation efforts, he finds a town full of magical creatures. Afraid of being rejected, and seeing danger at every turn, he wants nothing more than to leave this small town. Except, that was before he met Ancel.