Adam Smith 
Long Walk to Valhalla [EPUB ebook] 

There are many things that Rory would like to forget about his childhood growing up in rural Arkansas. Sometimes, he’d even like to forget about Joe, his mentally challenged older brother, both his closest friend and biggest problem. But when a young girl named Sylvia shows up, claiming to be a Valkyrie sent by the Norse god Odin to deliver Rory to Valhalla, he will have to face the past he’s tried to lock away.