You Were Sent to Earth to Kill, So Why Are You Only Killing Japanese?

This is a world where killing people makes you stronger. When people turn sixteen, they all awaken a World-Ender System. The awakened gain an identity and a profession in another world. The more people they kill, the greater the combat power their System rewards them with. Some become Butchers of the Rainy Night, turning into terrifying urban legends. Others become Patient Zero, spreading dozens of kinds of plague. Chen Qingyuan, however, is stuck with the most good-for-nothing profession of all: Moonblade Master. His attacks barely hurt enemies, and his healing barely helps his allies. Just as he is about to despair, he realizes that the place he has transmigrated to is a little strange. Isn’t this the Blue Star of 1937? That’s right, the very same year from the history books, when the nation was shattered, families were torn apart, and the country stood on the brink of ruin. After saving a female student from the Japanese, Chen Qingyuan is shocked to discover that killing a single Japanese soldier not only boosts his combat power, but also grants him a special bonus called “merit.” While everyone else suffers calamities and endless bad luck because of the slaughter they have wrought, Chen Qingyuan is completely unaffected. What’s more, since he only kills Japanese soldiers, merit gathers around him, his fortune soars, and he gains blessings and a longer life! At that moment, Chen Qingyuan understands. So the tens of millions of Japanese soldiers are his golden finger! He has to keep them well supplied and kill them slowly!