I’m the Heroine’s Mermaid Friend

I realized one day that I had been reincarnated as an extra mermaid from the novel. All because of a chance encounter with a human. And that human turned out to be the male lead. Wanting to witness the events of the original story unfold up close, I became friends with Kyraan. Thanks to him, I also had no trouble befriending the kind and beautiful heroine, Flora. I thought all that was left was to sit back and enjoy watching the original story play out. But then… Kyraan started acting a little strange. “…I wish you’d pay more attention to me than to them.” At first, I assumed it was nothing more than ordinary jealousy between friends. “Why won’t you let go of me?” “Because I want to hold on to you a little longer.” “Holding on to me won’t purify you, you know?” “I’m not holding you because of the purification.” I thought he needed my powers to purify himself. Then— “I like you, Serinel.” Thump. If that wasn’t the reason… Then what am I supposed to do?