There's this guy I've been hanging out with since middle school. Shim Jiseong. When we both became adults and I heard he manifested as an Omega... honestly, I thought it was a joke. He's built like a mountain, and his personality is so aggressive. He didn't suit being an Omega at all.

I was just a Beta. I'd never smelled pheromones in my life, and I only ever dated Betas. Since I couldn't smell anything, it didn't matter to me whether Shim Jiseong was an Omega or not; we lived together as roommates for nearly ten years without any issues.

But recently, something changed.

Every time I crossed paths with Shim Jiseong, there was a scent catching the tip of my nose. I thought I was imagining it at first. But it kept happening, over and over. A faint, unfamiliar metallic smell. It grated on my nerves in a strange way.

I went to the hospital. The doctor looked at my test results and said:

"Hormonal transformation has begun. It's rare, but sometimes people manifest as Alphas late at this age."

Then he added that artificially changing one's gender with drugs is illegal, and asked if I had ever injected anything.

I've never taken any drugs.

...I have no idea what the hell is going on.