Permissions! CONTAINS SPOILERS
Oct. 7th, 2030 08:47 pm[Canon] = The Legend of the Legendary Heroes ( Densetsu no Yūsha no Densetsu / 伝説の勇者の伝説 )
General permissions
The Legend of the Legendary Heroes is home to a lot of terrible things. Child Soldiers, tons of violence, eye horror, high rates of child death, sexual assault, a few cannibals. (Take Game of Thrones, ramp it up a bit-) IF YOU WANT ME TO AVOID THESE THINGS, LET ME KNOW.
Sion isn't someone who takes part in that, but his history does involve it.
Sion is no longer quite human – he's something called a Human α, which really just means that he has unnatural charisma. Literally infects people with "you like me", although not in a romantic sort of way, but in a loyalty sort of way. People who can escape this are non humans, or humans who can't fully feel emotion for some reason or another. Learning he has the Mad Hero may or may not make the effect go away. This is a passive ability, and Sion can't do anything with it. Basically Sion has powers of "I just met you and you're kinda awesome I wanna follow you".
Asruld is living inside Sion, and can take control over his body, thus talking in a normal way, or can communicate with "A voice that seems to be from above and below and inside your head", because y'know, deity level being.
In a worst case scenario, and Asruld gains control of Sion's body, Asruld can summon black swords. Five is seen as what he hits Ryner with - which are controlled by willpower. These do not do physical damage. They are seen ripping clothing, but do not cause bleeding. They seem for the purpose of spiritual things - devouring or transferring Mad Hero powers. However, they seem to hurt like hell regardless.
Asruld is most commonly described as darkness - "A pitch black consciousness", "he succumbed to the darkness", "your periods of darkness". Asruld is described this way, but not described as 'evil' - rather, he is a being of destruction who exists to right the wrong that the existences of Goddesses creates. (Or, well, he was supposed to take out a set number of Goddesses, run into one more powerful than him, and collapse out of no longer having a purpose. But he changed the rules of his existence with the help and power of Ryner Reed, the Lonesome half of the Lonesome Demon)
The reason there's the whole Human α thing is because Asruld's plane of existence is the original one. The above mentioned beings known as Goddesses tried to imprison him, and the spell that keeps him bound is called Human, and makes up the Menoris that Sion lives on, with the individual humans being part of it. I think the only difference that there really is for humans and Humans is that the Menoris Human has magic to their flesh - if someone consumes magic, they can gain some by cannibalism (this is a thing that happens in canon. I am sorry)
Copy-paste, with game/character name!