High Martial: Invincible Thanks to My Childhood Friend

The two worlds have fused, and fragments of the world are locked in conflict. In this high-martial world, his Dao companion has taken 70% of his aptitude and lifespan. Little does he know that his Dao companion is a treasure. Cheng Yi transmigrates here and proceeds with extreme caution, secretly stealing martial arts proficiency and squeezing every last benefit from his Dao companion. Amid wars between otherworlds and conflicts across the greater, middle, and lesser thousand worlds, he fights for every inch and ultimately becomes a monstrous powerhouse with the help of the System.