Tate no Yuusha no Nariagari - Chapter 361 - An Enemy of an Enemy is

This is a prequel to the anime movie To Aru Majutsu no Kinsho Mokuroku – Endymion no Kiseki.

Just before the completion of the Academy City space elevator “Endymion”, the main characters Kamijou Touma and Index encounter a level 0 girl named Arisa. The Magicians are after Arisa, and they attack Academy City. A female leader named Shattoaura leads a unit from Academy City against the attack. Kamijou and Index learn from Stiyl that Arisa is key to a brewing war between the sides of Magic and Science. When science and magic cross paths, the story begins with Endymion as its stage!

After learning about my girlfriend's infidelity, I got drunk and woke up in the world of the novel R-19.I became a character who is not even included in the extras of the novel — the useless and unnecessary daughter of the Duke de Walt. However, I didn't care about it, because I knew what this world was waiting for ahead.In the near future, the Ruvens Empire will be mired in chaos, and in order to survive it, I decided to quietly sit out in the manor enjoying a luxurious life. Everything went according to plan, until one day I made just one fatal mistake.A year after my rebirth, I accidentally found a wounded commoner in the forest. Out of pity, I decided to take her in and kept her. We lived together until I found out that this was the main villain who was supposed to die at the end of the novel. But because of my interference, the plot of this damn book continued with me!I have to run now! But where...?!After all, this crazy woman is now stalking me.— Where are you going, lady?— I… just went out for a walk.— Take a walk? The border of the empire is not the best place to walk. Let me walk you back.With the sword in her hand, I didn't have a chance to refuse.

She is an expert in medicine, the only daughter of Yun Tian, Yun Valley’s master.

Her parents died, leaving her alone in this world. She fell from heaven to hell. She had a marriage prospect but her future husband broke it off. The entire world view her as a joke.

She blossoms in Feng Yun Hall, with unparalleled wisdom and startling beauty.

Against all the people eager to make a move, she lifts her hand first. Kill the chicken to warn the monkey.

But nobody knows that the soul within her has long been replaced by someone from another world.

She has no regret in the past life and originally plans to live an idyllic life, but because of the same question from the past life, she gives up the peaceful life and steps into the power struggle for imperial power.

- Description from Novelupdates

I don’t want to die. I want to be free. To that end, I shall….reconcile myself to the fate of becoming a “monster”.

A strange disease that racks one’s entire body with intense never-ending pain, until the person slowly withers away and eventually dies. After a few years of braving through the pain, the boy is in no luxury to even feel despair. With nary a soul to tend to him, he breathes his last.

The next time he opened his eyes, the boy had become an “Undead” of the lowest rank through the power of an evil Necromancer.

The boy rejoices at having his earnest desire fulfilled, which is a body that will never feel pain. However, he realizes that he is still under someone’s control and how it was no different from when he was cooped up in the hospital ward.

But the world would not leave alone the boy who only wished for peace.

The Necromancer who revives the boy from the dead, names him “End” and attempts to gain control over him.

The Undead Knights, lay their lives on the line to persistently chase after and annihilate the beings of the darkness.

With countless monsters under their command, the Demon Lords rule over their own lands while they all contend for ultimate supremacy.

The motivation being survival and freedom. The requirements being caution and power.

This is the tale of the cowardly King of the Undead. In his pursuit for freedom, he heads into battle and turns tail at times. He knows when to fear his opponents and when to waver in his decisions.