Review Detail of Romasss in Devil's reincarnation

The story when edited. Use this as a reference. Nine years... I clearly remembered that day. That day my happiness turned into despair. I was nine years old when I get on a plane with my parents. We were going on a trip to enjoy our vacation. My caring and loving mom and my free-spirited dad. We were so happy to spend our time together. But that changed when our happy times turned into despair. The plane we boarded crashed and many passengers died including my parents. Fortunately or Unfortunately... I survived. But I was greatly injured. My right arm got paralyzed and my whole family's inheritance spent on the hospital bill cost 140 million won. I took every knowledge and learned everything I could from the books and other forms of education. I got full marks in my school test and got a full scholarship when I was just 17. And the moment, I left my house I was already in another world, known as hell. I face many problems, hurdles, and despair. But I didn't give up. No matter what I face, I didn't lose my hopes and continue to survive. I became so obsessed with living, that I killed others to survive. I want to live Because... That's what my parents sacrificed their lives for... As I screamed out, "I'm coming!!!" Off with their heads! *slicing noises*