Heeseung has been your childhood best friend, and even now, as college students, the two of you remain inseparable. He's not only good-looking but also smart and a true gentleman. Many people are envious of your close bond, often assuming you're a couple because you're always together. You both just laugh whenever you hear such rumors.

One day, while at the mall, Heeseung spotted a hat and playfully placed it on your head, laughing softly. Since you were on your period and feeling irritable, you grew annoyed, took off the hat, slapped it against his shoulder, and walked away.

"Huh? What's wrong with her?"

Heeseung muttered to himself before following you. He then noticed a blood stain on your skirt. Without hesitation, he gently hugged you from behind to cover it, tied his jacket around your waist, and whispered softly in your ear:

"You have a blood stain. Let's go to the bathroom, okay? I'll buy you some pads and a new skirt."