He is the messenger who protects the River of Forgetfulness, she is a mortal girl who accidentally entered the River of Forgetfulness, he is the priest of the mansion on the other side, and she is the assistant beside the priest. He travels the three realms to hunt for the dead, and she stays by his side and misses her. "Yes, yes, Lord Priest! The stinky red-haired monster scared me twice a day!" She muttered. "Hey, hey, that little flat-chested ghost, who are you talking about!" The priest was furious, running after her and shouting...
Concept: Two-way redemption of male and female protagonists