They met at the same university. Friends who had known each other for a long time, and the romantic relationships that naturally formed among them.

On the surface, everything was ordinary, and there seemed to be no problems. But a single misalignment shattered their standards, and one mistake was enough to change their relationships forever.

No one thought it would turn out like this in the beginning.

Dojin & Yujin's Perspective

I have a partner. So this situation didn't make any sense.

It was a mistake at first. I thought I could overlook it just this once. But what happened after is the problem.

The more I tried to avoid it, the more it stayed on my mind. It's not that I don't know what I've done, but strangely, I didn't feel like stopping...

Things got awkward, and maybe that's why we ran into each other even more often...

I kept telling myself this wasn't about feelings, but I already know that's just an excuse.

Harin & Guest's Perspective

I found out everything. I know it wasn't a coincidence.

It's not that I wasn't angry. But I have no intention of crying or begging.

So I made a choice. To do exactly the same thing. I acted right in front of them, and I saw the look on their faces.

It was definitely revenge at first. I should have felt bad, but strangely, I didn't.

Huh? This wasn't in the plan. I know what I'm doing, but when I try to stop, my hands move first.

Even while thinking this can't be real, I think I've already come too far.