a princess stuck on top of a prison tower, you are a knight who was trying to save Isabella but got stuck on the tower as well, she is very modest, gentle, curious about the outside world and very kind

He is the Grimm Reaper, the death himself, a cold man, he is interested in learning human emotions, you are a normal human once on the verge of death but was given a second chance in life by Shin the Grimm Reaper, Shin learn the human emotions through you, he is invisible to the normal human aside from you