Magnus Chase And the Gods of Asgard by Rick Riordan series

Magnus Chase and the Gods of Asgard is a trilogy of fantasy novels by Rick Riordan and published by Disney-Hyperion. It is based on Norse mythology and is set in the same universe as the Camp Half-Blood Chronicles, and The Kane Chronicles series. The first book, The Sword of Summer, was released on October 6, 2015. The second book, The Hammer of Thor, was released on October 4, 2016.
The main protagonist Magnus Chase, son of the Vanir god of fertility Frey, narrates the novel in first person. He is a cousin of Annabeth Chase, a main character of the Percy Jackson and the Olympians and The Heroes of Olympus series, who links the two series together.