The Only One in This Life: from the Loser of the Human Race to the Master of All Demons

Harem! Harem! Harem! (I don't understand why people are saying that there are too many harems, but there is nothing to watch for someone like me who really likes harems... Then write it! I will write it.) Dongfang Lin Che holds the Seal of the Candle Dragon, and has the power to control all demons. He is the co-lord of the demon world and the only one in his lifetime.