I wish I were insane enough to own Soul Eater, but too bad, I am only insane enough to hope that I own Soul Eater.
Simply saying, I neither own nor be owned by Soul Eater.
Once upon a time, two legendary weapons, Ragnarok and Excalibur, were made by two nameless swordsmiths who went missing and were unseen by anyone after having handed the two weapons to Lady of the Lake. Why? You have asked the wrong person.
A rumor suggested that those two nameless swordsmiths were called "Gan Jiang" and "Mo Ye", the famous swordsmiths couple running away from China in the past. It remains unproven.
Another rumor suggested that Ragnarok and Excalibur were actually the children of Lady of the Lake. It remains unproven, also. Only heaven knows the answer.
By the way, it is actually much known only that they were brothers(It is possible that they were twins).
Even though Ragnarok and Excalibur were adopted by Lady of the Lake in the same time, she liked only Excalibur, as she disliked how dark Ragnarok is. She didn't even bother to give Ragnarok a name. She just called Ragnarok with the names "rubbish" "bad child", and etc.
Neglected and even disliked by his mother, Ragnarok started to do many things, like playing pranks, bullying (and even hitting and abusing) Excalibur, to get attentions.
But, it backfired; Lady of the Lake disliked him more and more.
Sometime, even though Excalibur was being annoying and Ragnarok just intended to teach him lesson, Lady of the Lake would just scold and punish Ragnarok. Excalibur? He did get punished once for this. But what is the reason? Just for the reason that he shouldn't mix with a rubbish like Ragnarok. And it is once when Ragnarok didn't do anything to get back to him yet.
Excalibur ended up becoming an annoying spoiled brat.
Ragnarok could no longer tolerate it. Thus, he left home.