Power Gained From Bragging

After transmigrating into a useless heir from a military family, he is rejected by his fiancée and immediately awakens a system that makes every boast come true. In just three days, his empty bragging turns into explosive power, sending him up seven realms and shocking everyone who mocked him. From crushing a scheming crown prince to humiliating sect geniuses and battlefield elites, he talks big, grows stronger, and proves that in this world, his wildest words may become reality.