When a person turns 16 they start to hear someone singing, that someone is their soulmate Lila Yamazaki, aka, Pro hero Siren. Lila is an American hero, #2 hero to be exact. But when she's called to transfer to the HPSC all the way in Japan, to be the new partner of #2 pro hero Hawks, she jumps at the chance to be able to explore the world. Plus, from what she can figure, her soulmates, yes, soulmates, plural, are Japanese Will she find her destined partners on her new journey? will they be like she expected? find out in Siren's Tale