In a world where sirens are common, the protagonist is a hybrid of a human father and a mermaid mother. He's always playing the piano under the sea, when a strange siren approaches him…


Killer mermaids, gender swapping, and a devilish little sister with the power to end the world—four more unforgettable short stories that reveal the starting point of Tatsuki Fujimoto, the twisted mastermind behind Chainsaw Man. 
(Source: Viz Media)
 
1. Ningyo Rhapsody (2014) 
2. Me wo Sametara Onnanoko ni Natteita Yamai (2017) 
3. Yogen no Nayuta (2015) 
4. Imouto no Ane (2018)

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