Ultimate: Awakening the Enemy Killing System, I Go Back and Forth to the Devil World

Jiang Yu traveled to the world of the Ultimate Series and found that he had actually traveled to the demon world in the timeline of 'Ultimate Class 1', and a 'Return Countdown' appeared next to him! And! The enemy killing system is awakened! As long as you kill enemies, you will become stronger! The enemy-killing system not only has combat power indexes, treasures, techniques, and weird things that can be redeemed, but there are even weird talents that can be redeemed! 'Voice Talent: Being able to listen to anyone's voice' 'Death Countdown: Being able to see the countdown to the death of others' 'Dream connection: being able to connect to other people's dreams has some kind of embodied function' After killing enemies continuously and becoming stronger, the return countdown is cleared! Jiang Yu unexpectedly discovered... The timeline he traveled through turned out to be the golden time and space ten years later, which is the timeline of Ultimate Class 3, and his identity turned out to be that he and Sabi's fourth younger brother were challenging the boss of Ultimate Class 1 at Guava High School—— Lei Ting. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.