Kryptonite God of War: from Trash to Invincible

[High martial arts + system + krypton gold + invincible style + decisive killing] Traveling through the world of high martial arts, I became an F-level wasteful high school senior. The class teacher asked me to sign an agreement to "give" my liberal arts grades to the rich second generation in exchange for a compensation of 5 million. The original owner was so angry that I signed it on the spot - is there such a good thing? The moment the account is received, the golden finger is activated: Krypton gold will make you stronger! Others have been practicing hard for ten years, but I made a breakthrough instantly by swiping my credit card. Four years later, I was the youngest major general, and S-class aliens ran away from me. The abyss of the underground cave opens, and the alien emperor descends? Sorry, I just made a big one.