Maigo no Ω wa Juujin α ni Mitasaretai

Five years ago, Kiriya Minazuki (omega) was found half-dead in the mountains by detective Glen Yamagami (alpha), and ever since, the two have been living together. Kiriya has bite marks on the back of his neck that signify he is bonded to an alpha, but he has no memory of his life before his rescue. To add to that, he finds himself having fallen for Glen, although Glen doesn't appear to be romantically interested in Kiriya... Wanting to follow in his hero's footsteps, Kiriya's become a fine police officer in his own right. But, while on stakeout at a bar, he winds up drugged and goes into heat right in front of Glen... This is an omegaverse story featuring a beastman alpha and an omega cop who are partners on the job!

(Source: Renta!)

Included one-shots: Cool na Ω to Tough Dog (The Cool Omega and the Tough Dog), Cool na Ω wa Nayamashii