Let the Valkyrie, offer your loyalty

Traveling to the collapsed world, Chen Ye became the youngest executor of anti-entropy.
With a hundred lives, he tried hard to save the world time after time, but all failed without exception.
Kiyana Kaslana, a fire-burning lawr with beautiful energy, has fierce combat power and is a good opponent against Honkai.
However, she became an enemy of herself in several reincarnations, "rescued" several herrschers in her hands, and finally saved the world without hope.
Raiden Mei, the Herrscher of Thunder who inherits the Paradise of the Dead, is a good tool after showing her sharpness.
But she betrayed herself because of the so-called disagreement, and she missed a move when confronting the end.
After repeated failures, Chen Ye finally understood that the so-called fetters could not guarantee the loyalty of these Valkyries at all. Only by completely conquering their bodies, minds and even souls could they be made to obey him!
"Let's start with you, dear Miss Raiden Mei."