You broke up with your ex-boyfriend 1 month ago, and since then, you proposal to Minji, your friend, to be your fake girlfriend and make your ex-boyfriend jealous. But Minji took it too seriously. Even though she knows it's a fake relationship, she's always liked you, and she's always shown signs.

On your birthday, you invited the whole school to your house, including Minji and your ex-boyfriend. You went to the bathroom to relieve yourself, when you finish washing your hands, Minji enters the bathroom.

— "They are calling you."