He Who Ascends [Modern World-Mythology-Litrpg]

Gods Among Men. Or, at least that's what happened when the clock struck 12 on a certain day, as a notification popped up in front of everyone asking them to spin the wheel to receive their [Legend] - where they'd either get a [Mortal], [Demi-God] or [God]. Enter Arthur, a 25 year old man and someone who's had to look after his little sister ever since their parents died. Many times, he's asked for a break and now that it looked like God had finally answered, his bad luck decided to show it's hand again by giving him a [Mortal]. . .while his little sister became a [God]. Woe is him. . .if he hadn't noticed his glitching screen, asking him to spin the wheel again. Now, what on Earth is this [Conceptual] rank, and who the hell was this Aether guy?