The Tales of destruction; Apocalypse

Rudra, a seemingly normal child grows up in a normal family in a normal world.  His life was also very normal.  Until that day When the catastrophe struck him.  He found himself transported to a new world via a thunderstorm. A world so vast and so different compared to the one he grew up in.  This new world was filled with magic both in literal and metaphorical sense.  The first shock he received when he realised that he was in a new world was soon overshadowed by another shocking fact that his body also was now completely different from the one he was born in.  He had to grow up again in this new world, facing his own hardships, carving a way to guide himself.  Currently, Rudra had spent a decade in this new world adapting to it everyday.  It's now time for him to become a mercenary, to help people as he always dreamt.  And yet fate holds for him a path; a path that is more challenging, more dangerous, more thrilling and something that will make him the strongest someday.  The power within him guides to fight against the evil and he won't be alone. His allies will be there, fighting alongside him.  Each step he will take would be met with calamities far stronger than humanity expects until the day he meets the end.  WHAT TO EXPECT • MC becoming gradually stronger throughout the story.  • Multiple Characters as important as MC.  • Battle against monsters, dungeon raids, wars, empirical politics, multiple twists.  • No systems but contains Ranks and levels.  • Various races appearing throughout the story.  • An uniform power system with evolutions and some exceptions.  • The story having a timeline of decades.  • Story will be available in different parts; with two consecutive parts having a timeskip.  • A mysterious power source.  Chapters will be posted in every five days until further mentioned.  (English isn't my native language so i apologize for any kind of mistakes I might make in the story)