Keyaru

Keyaru is the main protagonist of Kaifuku Jutsushi no Yarinaoshi ~Sokushi Mahou to Skill Copy no Choetsu Heal~ series.

After years of torture, he manages to break free and gets an item that guarantees every desire and goes back in two years time to start his revenge.

Appearance
Keyaru is a young boy of medium height with brown hair and red eyes, initially he is dressed in simple clothes he used in the village, then after the start of his revenge he uses a set of armor he stole from the Captain of the Guards. When he uses Heal's skill, his eyes turn green.

Pre-betrayal:
Before the betrayal, Ketayru was a simple boy, rather innocent and with dreams, after realizing that he was a hero he was excited to save the world, and although he was very different for his class he was still happy.

Post-betrayal:
After realizing that Keyaru's power is not normal, he is imprisoned and after being tortured, drugged, raped, his personality changes completely. In fact, because of the betrayal of the naive personality that he was, he changes to become more vindictive, sadistic, manipulative, cunning, evil, distrusful and full of hate.

Powers & Abilities
Heal:  By healing things and concepts, Keyaru performs various abilities from the Healer Class: Eye of Truth:  Also called as "The Eye That See Through Everything", is a powerful magic that Keyaru obtained by making a pact with the spirit of the stars. It allows him to get full information about the target's stats, such as: Magical defense, Physical defense, Level, Mana, Health, Class, Abilities, Passives, and Speed.
 * Recover: By manipulating time and matter, Keyaru return things to their original states, healing deep injuries from himself or others, nearly instantly. Using it to heal someone will cause him great pain, but later on the series he learns how to use this skill without getting any struggle at all.
 * Simulation: Every time Keyaru heals someone, he gains the fighting skills and experience from that person. He already used this skill many times before, retaining all the knowledge from different fighters, soldiers and mages.
 * Corruption: Destroys the target from inside, corrupting them. Keyaru usually refers to this ability as a One-Hit KO skill, though the full details are still unknown.
 * Steal: Can absorb all the mana from someone, or just a portion if he wants. If the target is a mage or fully dependant on mana, that person gets incapacitated and weakened.
 * Upgrade: Ability that allows Keyaru to modify things by "upgrading" them to a desired state.
 * Superhuman Augmentation: By upgrading himself, he can enhance his own stats (and also decrease them), such as strenght, speed, magical defense, physical defense, and magical attack.
 * Transmutation: Keyaru can modify someone's body by transmutating them, allowing him to change their appeareance, physical stats, gender, and mind.
 * Memory Erase: While touching someone's head, Keyaru can mess up with people memories and can also erase them at will.
 * Shapeshift: By using Upgrade on himself, Keyaru can change his appearence.
 * Rewrite: Keyaru can use Upgrade on enchanted/magical objects, changing their functions.

Anna: She was the most important person for Keyaru, the woman he loved and his first love, and in his own mind the only person who manages to keep a part of his sanity. After being raped all night by the Captain of the Guards, thinking it was Keyaru, she commits suicide. This event makes up for Keyaru's hatred and suffering, wanting to take even more atrocious revenge.

Keyaruga's Party
Freya: It was she who initiated the change in Keyaru's personality and it was his first targe of revenge. After having had enough strength to take revenge on her, raping her, thanks to her knowledge of souls, erases her memory, slightly modifying her appearance to transform her into an ideal girl but leaving all her knowledge intact, becoming one of his lovers of his harem.

Setsuna: She was a semi-human slave, after helping her with her revenge she too joins her party and becomes one of his lovers.

Kureha Clyret: She seems to develop a crush on Keyaru after he regenerates her lost arm, then they meet again as enemies, but after solving the "misunderstanding" she becomes another of his lovers.

Eve Reese:

Others
Heroine Swordswoman: She is one of the Heroes, and one of Keyaru's main targets of revenge. She is a homosexual, and has an obsessive love for Freya, in the previous timeline, when Freya used a Keyaru drugged as a sex toy, often she jealously beat him until he fainted.

Hero Gun: He is one of the  Heroes and and one of Keyaru's main targets of revenge. He is homosexual and has an obsessive love for Keyaru, in the previous tieline he often raped him as proof of his "love".

Norn: One of the heroes, and Freya's younger sister, according to Keyaru her personality is dark and pitch-black, and because of her abilities in the schemes she is the only one capable of killing him.