Sana and Momo were in love. As their best friend, Mina saw it coming from a mile away. Everyone did. It seemed like the only people who didn't know that Sana and Momo were in love were Sana and Momo themselves (or Momo, at least).

But Mina felt the change in their relationship one day. She saw the gentle shift in the way that Sana and Momo smiled at each other, the way their eyes sparkled with more affection than usual, the way their special world with each other grew just a little bit bigger, leaving Mina feeling just that much more isolated as a result.

"Sana kissed me last night," Momo told Mina, confirming the change that Mina had already noticed between them.

"It wasn't a big deal," Sana said, but the affectionate smile that passed between Sana and Momo told Mina exactly how significant the kiss really was.

Mina knew that she could never compete as number one in either of their hearts. Sana and Momo had grown up together, inseparable from the ages of 6 to 16, but Mina always thought she was a close second place since the day she met them when they were 12.

Sana and Momo were always doting on her and spoiling her like no one else ever had. But as much as Sana and Momo held her hands and hugged her, as much as they showered her with praise and affection and soft kisses on her cheeks, Mina knew that the gap between first place and second place in their hearts was enormous.

So Mina spoke nothing about the loneliness in her heart whenever Sana and Momo looked at each other. She hid the burning jealousy she felt whenever she saw them kiss. Mina was sincerely happy for her two best friends, but the burden of being second place, just outside of the borders of their special world, became too much for Mina to bear.

"I'm jealous of you guys," Mina found herself saying one night, several months into Sana and Momo's new relationship. The three of them were hanging out in Mina's room after school. Momo and Sana had just shared another kiss