I Said I Am SSS Level! Wouldn't You Explode?

[SSS-level thunder method explodes at the beginning→Ultimately burns out to save the world→Farewell to the world with a smile] "If it's too difficult to keep a low profile, then... Let's end it with a bang!" Ling Feng's biggest dream in life is to graduate quietly and find a class. However, on the day of the college entrance examination power test, he made a slip and not only exploded the tester into the most brilliant fireworks in the sky, but also awakened a rare SSS+ level thunder power that was rare in a century. From now on, ordinary people are passers-by. Bound to an unreliable system? Daily crash! He originally thought that he would continue to complain and occasionally save the world despite his ridiculous strength, and live a life that was not ordinary but at least lively. Until the battlefield of all races comes. The familiar smile extinguished in front of his eyes, his best friends fell one after another on the road to protect him, and the human defense line was on the verge of collapse. The boy who was always lazy and always wanted to avoid trouble finally lost all his joking expression. "System, this time... I'm afraid there won't be a 'reminder later'." He burned everything he had - energy, life, and even his soul. In the end, the ultimate lightning that illuminated the last dawn of mankind took away all the enemies and him. In the most brilliant way, he fulfilled his original promise - "I just want to... Low-key... Protect everything I want to protect." (It's just that the price of being low-key is a bit too high.)