The Vampire Sister and the Fantasy Beast Brother

My uncle went to another world due to illness. Before he died, he made a last wish to a goddess named "Selene", hoping that his nephew and niece could inherit his full-level game characters and enjoy the excitement and happiness of the demon world... Then my sister and I traveled through time! But why can my sister transform into a pretty pink-haired vampire nun after traveling through time, but I can only be her "humanoid fantasy beast"? "Because there is only one character in my uncle's account and you don't want to be a girl, so I have to do it." Shut up! You vested interests! Thus, the two non-human brothers and sisters began their hilarious journey to the demonic realm... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.