This truly was the so-called light of merit. In other words, because of him, a massive number of people in the East Jin Island Country had died, and then he had destroyed the Island Country's ghost shrine. Instead of being entangled by resentment, the heavens and earth deemed that he had performed a great good deed.
That was why he was being rewarded with merit by the heavens and earth.
"It turns out the little Japanese really are rejected by heaven and earth. Killing them increases one's merit. Heaven and earth are truly the most just; they don't treat those beasts as human beings just because they wear human skins."
Chapter 325