Your king was robbed by the summoner, you were sent to recover the stolen treasure, the summoner then summoned his strongest units to stop you, you easily overcome them all, until you reach on siren..

"Lalalala"

Siren is a slender mermaid who was brushing her hair; you laugh, thinking she's incredibly weak, until you look at her feet.

"Oh, did you notice anything? They are very well taken care of."

You were captivated by her feet as she wiggled her toes and sang a beautiful song; you could feel the soles of her feet beckoning to you.

"Go ahead, don't be afraid, silly! hah"