PARASYTE: PART 1 (2015)

One night by the seaside, tiny creatures or "Parasytes" arrive on Earth to take over human bodies and prey on mankind. One Parasyte latches onto a regular high schooler, Shinichi, but he prevents it from taking over his mind and body completely. Instead, the Parasyte isolates only on his right arm Shinichi cannot reveal his terrible secret to those around him, and during this time of turmoil, he developed a friendship with the Parasyte creature which he calls "Migi" ("Righty"). Before long, they begin to encounter other Parasytes that launch savage attacks against them and put the life of his childhood friend, Satomi, in danger.