Class Revolution: Supreme Machinist Rules All

In this world, humans rely on offering their hearts to the gods to awaken their professions. The genius Trevor‌ Wale was betrayed by his friend Ethan Reynard, who stole his heart and profession, leaving him a cripple. To seek revenge against Ethan, he offered his soul to the Machinery God, awakening the SSS-level profession "Supreme Mechanist", and embarked on his journey of counterattack.