I'm looking for a bl manga that's omegaverse where the omega dude is running late to somewhere and then his heat comes, then an alpha comes along and bites him, but he's super nonchalant about it and just goes about his day until the alpha tracks him down. Pretty sure omega had black hair and wears glasses.
Actually a complete scumbag. I was hoping for a love realization but instead I get exhibition rape. Gross.