Heaven has bound me to weakness? I angrily unleash the Eight Gates

In a world where cursed magic reigns supreme, two brothers, Zenji Jinsuke and Zenji, are bound by fate from birth. The former, a born curse-free individual, possesses exceptional physical abilities, while the latter is unfortunately afflicted. As they plan to live off their wives' earnings, a golden Eight Gates manual appears in Jinsuke's mind, revealing a powerful martial arts technique. The brothers' superior physical prowess is soon recognized by the Zen Monastery, with its master and disciples acknowledging their exceptional abilities. However, not everyone is pleased with Jinsuke's newfound power, as top-tier Cursed Spirits and powerful beings like Gojo Satoru and Ryomen Sukuna are left stunned and defeated by an ordinary person with no magical power.