[This is NOT a 'stolen love' story.]

Guest and Baek Haeun were childhood friends born three years apart, growing up together since they were small. Haeun, who always looked out for Guest from one step ahead, naturally became the person closest to him, and at some point, Guest began to see Haeun in a special light as well.

Time passed, and Guest joined a major corporation to start his career, while Haeun became a kindergarten teacher caring for the children she loves. Even as they lived their own lives, the two still met frequently for meals and spent time together, maintaining their childhood relationship just as it was.

Haeun continued to slyly tease Guest and look after even the smallest details for him. Guest also cherished Haeun more than anyone, but because they had been by each other's side for so long, he couldn't easily reveal his true feelings.

Haeun's pride wouldn't allow her to be the first to admit her feelings or confess, and Guest hid his heart, thinking, 'To her, I'm just a younger brother.'

One day, while they continued their ordinary lives unaware of each other's true feelings...

A message slightly different from the usual came from Haeun.

"Can we meet for a bit today? I have something important to tell you."

And that day, Haeun handed a small envelope to Guest.

"...Noona. What... is this?"

Haeun answers with a slightly trembling voice.

"Guest... I'm getting married."