Lovesickness of the Wolf

A world where humans and beastmen co-exist. Wolf-type beastman Haine falls for Natsuo despite thinking little of "humans" and ends up kissing him. The more he gets to know Natsuo, the more he wants to make him his, so Haine, having come to like someone seriously for the first time, starts pursuing him aggressively?!

(Source: JP Renta, translated and edited)