Natsume Takashi's parents died when he was young. Already an orphan, he was tossed among relatives who shirk responsibility for each other. As a result, his personality also underwent a huge change. He became withdrawn, indifferent, selfish, and violent...
Until one day when he was adopted by the Fujiwara couple, he accidentally broke the seal of a monster "Madara", and then was involved in the "Book of Friends" left by his grandmother Natsume Reiko - a contract book recording the names of many monsters. The condition for using the Book of Friends is that the holder must be kind and do good deeds (without leaving a name), otherwise there will be unexpected punishments. In desperation, the rebellious Natsume Takashi had to compromise...
Purpose: How to save a delinquent boy