Helpppp

Helpp does anyone know the name of the manhwa that starts with the ml being chased by an animal (i think?) And then he hits his head and loses consciousness. And after that the Mc finds him and takes him to the hospital but the Ml lost his memories but he only remembered when he was a kid and not who he is now. After that the mc takes him to his house and after some time he again hits his head and rememberes who he is? I read it some time ago but not all of it and i wanted to finish it, English isn't my first language so I dont know if I even wrote that correctly ╥﹏╥