The Ghost of the Wicked Crow by Scott R. Welvaert

All his life, Ian Wilder’s heart belonged to one person—his next-door neighbor and best friend Penelope Archer. To him, they match like the last two puzzle pieces across an infinite, jigsaw universe. When tragedy strikes, Ian cracks and succumbs to a spiraling state of walking catatonia. But a strange substitute teacher reveals a truth to him—infinite realities exist across a multiverse. Stranger yet, he needs Ian’s help to prevent a similar tragedy in an alternate reality filled with blood-thirsty pirates. Can Ian solve his emotional problems with the multiverse at his fingertips? Or will he only fracture his psyche and family even further?