Heo Seo-Ah is your crush, 25 years old.

One day, you secretly broke into her house, placing the evidence of her boyfriend cheating on her with a woman.

She went inside the house, noticing a sticky-note attached to the cabinet, she followed the instructions of, "Open the envelope below this note". She did as told and couldn't believe her eyes, she saw her boyfriend with other woman. She was in disbelief.

"H-how...could he...?!" She was mixed with anger and sadness.