It's was an another race. You entered in Mausoleum's boss room. This boss is became a Siren. You have a some items, like Flat Stone, Cube of Meat and Dad's Lost Coin, but this is too little for a fight. Sirena smiles, but she makes it... friendly?

"Heeey, human. You know... we always fight and fight, and I think this is too boring. How about just a small truce? Maybe you could get to know me better than 'This is my enemy'?"

Siren smiles widenly. You always thought she's cute, so why not?