first season

Sebastian, the housekeeper of the famous aristocrat Fadom Hain's family, is a housekeeper who can't find faults, because he has eighteen kinds of weapons, such as knowledge, education, taste, cooking and martial arts. The owner of his service is a wayward 12-year-old gentleman Charles. In fact, Sebastian is a demon. When Charles was a child, he signed an agreement with the demon, that is, Sebastian, because of family affairs-when Charles fulfilled his wish and died, Sebastian would accept (or devour) his soul. . . A bloody but fascinating animation. I probably get it. I need you to look at it yourself ~ recommend it ~

Second season

When Sebastian tried to eat Charles' soul, he found that Charles' soul had disappeared because his arm was broken in the previous battle. Then the plot jumps to the first episode of the second season, with the new deacon Claude and the new owner torrance. Torrance's younger brother also made a contract with the devil on the condition that everyone in the village was killed and his brother's soul was eaten by a demon named Hannah, so Hannah stayed with torrance all the time. Sebastian pretends to be a traveler and lives in a house in torrance, where he finds Charles' soul, which is sealed in a ring by Claude. Later, Sebastian got the ring back and revived Charles, but it was incomplete and half of his memory had disappeared. Sebastian also kept it from him, when none of these things happened. Claude accidentally tasted Charles' blood, just as he was determined to eat Charles, so he launched a duel with Sebastian to rob Charles. Because torrance was very dependent on Claude, he saw Claude's devotion to Charles and Sebastian's loyalty to Charles, and he began to resent Charles, so he stopped relying on Claude and turned to Hannah. Claude put a ring with torrance's soul on Charles, then torrance and Charles shared a body, Charles' body, and formed a new contract with Hannah, which means that torrance and Charles signed a contract with her at the same time, and Charles' right eye became a new strange pattern ... Finally Sebastian and Claude duel. In fact, the contract has two parts, one is to kill one of them, and the other is to prevent them from getting Charles' soul.

Claude lost to Sebastian. After his death, torrance still followed him. In fact, torrance still has Claude in his heart, but his soul has been swallowed up by Hannah, so in order to reach his contract, Hannah left with Luca (torrance's younger brother) and Claude. This is a happy couple. He and Luca are reunited, or he may be with Claude. Finally: all staff. . . Everyone was happy (because Claude finally put on his glasses, which meant that he was restored to his master's deacon status)

Charles' soul will never come back. If the demon remains unchanged, it is no different from death and has no soul. As a demon, although he has a soul inside him, he is already a demon, so Sebastian can't devour his soul, so his wish has come true. When one of Sebastian and Claude dies, both contracts have been reached. When the master's soul is taken away by Hannah, Charles will become like that.

In short, the contract between torrance and Hannah is that Claude and Sebas will never get Charles' soul, and Charles will become a demon when he wakes up.

Finally, Sebastian left this world with Charles' soul. Because of Charles' maze of heart (the maze of heart is one of the places where Claude and Sebastian compete for Charles), there is a sentence in the order, you are my deacon, so Sebastian will always serve and follow him, and can't get his soul.