Reincarnated As Vampire Queen - Chapter 69 Defeated

I transformed and looked like a knight angel. I was a mid when he roared, he saw me with his raging eyes. Then he also start transforming. He got a little bigger and his twin tail change into three tail. He also got wings that look like bat and his claws got bigger and sharper. We were in mid and start fighting. I blocked his claws attack with my shield due to which I was pushed backward. I had no time to use my sword as he was fast and continuously attacked me with his claws. I then moved backward, came flying towards him blocked his claws and moved around and stabbed him on his leg. He screamed and attacked with claws and I blocked. I thought (I cannot fight like this all time, I need to get to his weakness.) I then remember about the time of fight where I can saw the flow if energy and stabbed at that point liked the demon. I blocked his claws with shield and focused on him. Then I found that the directions of energy flowing from the tails. I decided to cut the tails which might weaken him. I went on top of sky and closed my eyes and stood skill in mid air. Demon king said-“At last accepting your defeat. You now realized you can’t defeat me. I will show no mercy and now have to die”. As he was about to attack with the claws. I immediately turned upside down and cut his tail and dodged his attack. He screamed loudly, and a black flame emerges. He transformed back to his original self and fell down. He hit the ground and badly injured. I know it’s time to end this once and for all. I flew towards him and stabbed his heart. In painful way ,he said-“I underestimated you but I am right. My kind will wander and you will suffer for it”. I smiled and said-“Not anymore…” He became silent and I stood up and heard clapping. My friends in injured state stood up with each others support. Derek said-“You defeated the demon king”. I said-“No we defeated it together”. Suddenly my body started to pain. Yu asked-“Are you okay?” I nodded and then blood came out of my mouth. I felt a pain and burn in my body. Then armour, shield and sword slowly turned into light and disappeared. My body was wrapped in blood and injuries. I saw blur infront of my and I fainted.