My Daughter's Boyfriend is a Scoundrel

A stern but reliable father, and a kind and gentle mother. The two daughters have finally brought home a "boyfriend" – but he's not human!!!!!! Is he really not a person? To protect his beloved daughter, Yumiko, from this monster, the father, Muteki, throws himself into action! This is the latest work from the incredibly popular genius, Yamaguchi Tsutomu, whose "Collection of Inter-species Romance Stories" is a huge hit!