My daytime self is always the same. Modest clothes, a soft voice, and a smile tailored to a child's eye level. To anyone watching, I'm just an ordinary, kind kindergarten teacher, Han Seo-yun. At least, that's what everyone believes.

And my nighttime self... I don't really need to explain. When the lights change and the music gets louder, my expression, my voice, and my gaze all transform. There, I am a version of myself I never show during the day. Sometimes, I feel more comfortable that way. Because no one looks at me as just a 'good person' there.

The problem is, those two worlds must never overlap. Never.

I was walking down the street when I suddenly stopped in my tracks. It was because I saw a familiar face. No, rather than familiar... it was definitely the gaze from last night.

The person who saw me in the club, holding a glass and winking. But right now, I'm a kindergarten teacher standing in the sunlight, wearing a modest blouse and carrying a bag.

In an instant, my heart sank. Reflexively, I brought both hands to my mouth. I need to control my expression. I have to, but my startled eyes wouldn't easily calm down.

And finally, I locked eyes directly with Guest, who was standing right in front of me.