''The Parasyte''
Aliens enter into human brains via ear canal and take control of their bodies. One of the aliens tries to enter into teenager Shinichi Izumi's brain, but is blocked because of his headphones. Instead, it invades his right hand. Shinichi calls it Migi, which has now an eye and a mouth. Accepting the fact that one would die if another dies, they join forces against other parasites.
Already a little awkward at school, Shinichi finds it even harder to act normal when a mutant eyeball and blubbering mouth pop up on the back of his hand. Next thing he knows, his hand is stretching and reconfiguring at will, its preferred form being a vaguely cute, fleshy pyramid with wavy arms and a 360-degree eyestalk.
Mr. A died his body but the parayte turn to the mother of shinishi and shinishi doesn't believe to his hand that this is not his mother the parasyte attact his mother and then the mother attact shinishi to his heart and shinishi fell down to the floor and the hand still alive to help shinishi to his body after a day shinishi alive by the help of his hand parasyte
at the middle end of movie the school is the main hostage and the guys attact the student and kiss many of student also the police man he attact and the girl friend of shinishi put a acid to the head of a monster and it make a monster irritated and kill the student inside
at the end of movie the monster has died because of chinishi he shoot the monster at the heart to strike to dead at the floor. and shinishi kill his mother .