Patrick Rangsimant is a Thai neurologist and novelist whose fiction moves across psychological thriller, romance, speculative fiction, horror, and BL. His stories repeatedly examine how memory, grief, trauma, and distorted perception shape the reality experienced by his characters. In 7 Days Before Valentine, Patrick uses a supernatural bargain with a reaper as a structure for exploring grief psychology and the destructive consequences of refusing to accept loss. The novel demonstrates his characteristic ability to take a commercially accessible genre hook and deepen it through psychological themes, emotional ambiguity, and moral choice. Several of his works, including this title, have expanded into television and international editions.