One is a young master from a fairy family who has traveled to the past in modern times, and the other is a former demon king who is determined to take revenge after being reborn, killing gods when gods stand in his way, and killing Buddha when Buddha stands in his way. As fate would have it, a young master from an aristocratic family was forced to go into exile, and happened to meet a would-be demon. At this time, the young demon king had not yet shown his fangs and was still being bullied.
Mission: A friend in need is a friend indeed