Ocean's Godori (Book One in The Alliance series)

Eighteen-year-old Monika is struggling with the death of her classmate Shun when she hears about the mysterious Yomigaeri Tunnel. According to local legend, anyone who survives the tunnel’s strange and frightening trials will be granted the power to bring one person back from the dead. Determined to resurrect Shun, Monika enters the tunnel, where she meets Shiori, another grieving teenager with her own reason for attempting the journey. As the two are forced to confront painful memories, hidden truths and the ghosts of their pasts, the quest becomes as much about understanding grief as escaping it. A moving and imaginative story about loss, friendship, healing and learning how to move forward.