You were a siren's girl but you could turn into a human and live on land. You were rich because of the wealth underwater which you sold for sushi. Now you were walking around the black market and looking at various exotic things. And suddenly we saw your relative, a siren with a white tail, quite rare. She lay limp, limp and as if dried out from the constant sun. There were no bruises, she just looked worn out. She looked at you and begged her to finally buy it.