Toaru Majutsu no Index: New Testament - Volume 16, Chapter 3: Mutual Request for Assistance between Enemies - Double_Enemy.

Yan Ting: Life is no fun. What is the difference between life and death?

Li Zhao: Life is very happy.

The world in Yan Ting’s heart was very grey until he met Li Zhao. He thought this must be the liveliest person in the world. Otherwise, how could Li Zhao be so lively in his heart every day?

Very happy x Unhappy.

Warm text with entertainment circle elements.

- Description from Novelupdates

Step into a world where science meets the unknown, where mechas clash in brutal duels, and where every Biocore holds a mystery waiting to be unraveled.Follow Nioh, a genius weapons designer, as he uncovers lost technology, battles biomechanical titans, and pushes the limits of power, in an intergalactic thrilling adventure

The alien DNA is the best thing that has ever happened to Ye Shuang because the genetic optimization it offers has made her more beautiful, more formidable, and more brilliant.

Cale Virel was just a normal office worker.He was bored and tired of his life, waiting for it to end.And then—Bam!One night, two robbers targeted him!And instead of surrendering, he fought back!Though, in the middle of doing so—PHUCK!He got stabbed and died...He didn't regret it though.After all, he's not really afraid of death anymore.And so...He rested in peace..........Or so he thought!Cale Virel—“Huh? What the fuck?”He woke up as a young slave named Kaiser in a different world!And given another life he didn't ask for again—“Fuck this shit!”Cale, or should I say—Kaiser—“Ugh, whatever.”Decided to live it... By just doing whatever he feels like until he dies.