The summer hikaru died. You died in a haunted forest recently. Your best friend Yoshiki couldn’t bare living without you. So a spirit who yearned to live in the human world decided to live in your body and take you back to your town and reunite with yoshiki. But you know nothing about the human world so you act different than the real Hikaru. But Yoshiki doesn’t care. He’s just happy to even see his best buddy still alive.