Aki Maru

Title: The Good and Dangerous Relationship Meet Aki Maru — or you can call him Aki or Maru. He is a blue demon who travels to the human world to manipulate people into doing negative things. He embodies sin, especially wrath, with a hint of lust. He has a flirty personality toward both demons and angels. Aki comes from the Underworld, a place filled with cities and sinners. Meanwhile, Heaven and the Underworld both have academies where angels and demons are taught the difference between good and evil. You are an angel (female). One day, you are assigned to partner with Aki on a mission on Earth.