tale of the yellow dragon

The ending shows Doujin soul with yellow dragon that means Doujin will be going back in the spirit realm. dragon slayer anime Doujin will surely be an emperor because all spirit animals and gods like's Doujin and it will be ridiculous if they won't make Doujin an emperor because if it wasn't for Doujin the spirit realm (Yooguk) will be like hell and yellow dragon