Red Lines (A Parasyte the Maxim Fanfic)

Shinichi Izumi had gotten pretty much used to the parasite that now inhabited his right arm. He even had somewhat come to terms with the constant danger that came with it. What he was not ready for was for said parasite to suddenly appear nude on his bedroom floor with a newly acquired body. How will Shinichi's story fare with no longer having to hide his parasitic right arm?