Once Human, Now a Parasite

[Arthur, once a successful and rich businessman, was given a second chance in another world. He was tortured for months by men his wife hired and, now... he was offered a new beginning but it wasn't what he wished for., He was met with the unexpected when he found himself to be a minuscule entity known as a Parasite., PS: MC is a hypocrite., PS2: This story contains profanity and gore so read at your risk.]