Grayson Miller's story: "Desire me if you can"
Dane is an dominant omega and Grayson Miller's pair.
And believe me, no one really prepared you for Grayson Miller, that crazy weirdo is hilarious.:D
Probematic is, that the author revised the story when they released it in volumes a month after the web novel was finished, most tranlations you find ( most in english are not complete) used the original release as source. So if you don't want to /can't read the korean orginal on ridibooks, you need to be aware that there were some small changes and she added a few things that are most likely not included in the fan tranlations you can find at the moment.
You can search for the title or I send you links via message.
I've read somewhere that the red-haired firefighter is an Omega and has his own story. Does anyone have more info/ links to that?