Oliver Green, finally did what no one in his family was able to, he reached level 5 as a parasite mage. With it, he gained a new ability that allowed him to create a new parasite called, animal parasite. What will he do with it?

The story will start with male mc, but later on, not right away, he will become she. Also, I am not a native English speaker and I apologize beforehand for any mistakes, if you find it in you to tell me where I make any errors, please comment on them and I will fix them. I write when I have free time so don’t expect regular releases.