Hero of beginning or end

This is story is about Leon Cromwell who weild two contracting concept beginning and end as a weapon to save the world. Leon who following his friend max to hospital to see his sick sister who suffer from corrosive heart the incurable disease.max and Leon meet the healer who was responsible for max sister amaya.max was heartbroken from healer words who said Amaya didn't have much time left. Leon and max enter operation ward to see Amaya. "brother am I going to die" Amaya asked. "no i will save you even if I go to the end of the world"max said. "but healer said i didn't have much time left"Amaya speak as her voice quivered from heavy emotions. "don't say that I i... will definitely. save you"without able to control his emotions he started to cry. "brother please don't cry sniff ..."Amaya said as tears trickled from her eyes. sniff..sniff.. "how could I ?"said max max and Amaya are twins with fiery red hair.They are commoners.even though max is commoners he and Leon are best friends.so Leon also see Amaya as his sister so to see her in this state Leon also saddened. suddenly Amaya condition worsened.leon ,max and Amaya are 7 years old. The healer started to check her body said"her condition is worsening.To cure her we must find the recently dead or in como adventure who has no chance of living with strong soul to have heart transplant surgery because heart devouring disease also affect soul .so we also need to cut down down affected part of the soul to replace the heart. later the soul will automatically heal with the help of magic crest" the second healer who is asistant of the first healer said"but that is impossible because strong soul adventure are master stage.They aren't cabbages to find anywhere." hearing the what second healer said max began to loss hope. suddenly Leon said "healer use my heart to replace her heart my dad said I have strong soul as master stage" second healer said"kid don't play jokes" Leon said "i am serious " max said "no you cannot do that. i cannot lose even you.healer take my heart instead" Leon said"no max.you cannot do that.your soul not strong enough.don't worry I will be fine.All you need to do that is channel mana into my left eye after my dead ok.i have no plan about dieing early" max said"thank you Leon thankyou i always will be grateful.how to repay this favour?" Leon place hand in max shoulder and said"that is what friend's for" with Leon help Amaya saved. As told max channel mana into Leon left eye. their he widness miracle .Leon body with green glow from his eye his dead body reverted to his orginal healthy state alive. Leon suddenly woke up with cheeky smile said"damn being at the dead door is sure is thrilling" max was dumb founded by what he witnessed. This is how the story of the Leon Cromwell who name strike fear against gods and the same name who bring hope for friends and allies story starts. first novel so please adjust ok and English is my second language so if you have any complaint please post in comments.please give reviews if the the story good or not.so i didn't emparess myself