Parasyte is manga written by manga author/artist Iwano Iwaaki and it is very well done. It starts out with spore like objects falling from the sky and infecting various people turning them into shapeshifting creatures who can blend into human society flawlessly and prey on unsuspecting humans. One of these spores infects a high school student named Izumi Shinichi but he manages to trap it into his right arm before it reaches it's brain and matures. The beginning is very well done. It's very mysterious and leaves you wondering what the hell is going on. The premise of the manga is also very interesting. It always left me wondering what was going to happen next. Iwano Iwaaki said that he wrote Parasyte because he wanted to make a manga that was never boring and I do believe he has accomplished that.
Now onto the main story. After Izumi stopped the creature from infecting his brain and trapped it in his arm he finds out that the creature is very intelligent and is capable of doing many things that humans can do and exceeds humans in some areas. Izumi names the creature Migi because migi is Japanese for right hand. At first Izumi and Migi only care for each other for their own wellbeing. If Izumi dies Migi dies. If Migi dies Izumi loses his right arm. As time goes on Izumi and Migi become very good friends as they both learn to work each other and defeat other parasytes who want to kill them or innocent humans. No one knows that Izumi has a parasyte in his arm besides other parasytes of course.
One of the big parts of the story was when a parasyte stabs Izumi's heart and Migi is forced to heal Izumi with Migi's own cells. While this makes Izumi stronger and faster than any other human it makes think more like a parasyte and care less for other humans. He starts to think as Migi would. I loved the story. It was very well done and I could easily read it again. I just wish it was a little longer because it could easily be longer. It ends with Izumi and Migi killing a powerful parasyte that was 5 in one. One was the head and the rest were the limbs. It was a coolass fight but it didn't feel like it was worthy of being the end. It felt too rushed. 9/10 manga. I would definitely read it again.