[quote=@Bai Suzhen]
Would it be alright if I was the sister of one of the Stand Killer's victims? Unless I've missed something, they've not all been named, but I don't know what you've got behind the GM's curtain.

So far, I'm thinking that from a family of Stand users, Mercury Deacon and the earth-shattering Stand 'We Will Rock You' was killed, and her sister Taylor May with 'Seven Seas of Rhye' is determined to get to the bottom of it. Family surname pending, but Queen seems a bit too on-the-nose. Maybe that's the out-of-town matriarch's stand...

I quite like this image for inspiration [url]http://safebooru.org/index.php?page=post&s=view&id=913333[/url] and I see Taylor May as a fairly successful student, on her way to follow her big sister into college. She doesn't get into trouble, or act out beyond the usual teenage rebellion. Her electric guitar probably wouldn't be her parents' first choice, but playing an instrument does look good on college applications...

Seven Seas of Rhye appears as a green-blue trident-wielding mermaid, with a large numeral '7' in place of a face. It has a 'territory' effect with seven distinct abilities. The size of the territory and the available abilities is dependent on the amount of water nearby for SSoR to act through.

'I descend upon your earth from the skies' - Water is pulled from the atmosphere, encouraging it to rain. Area and intensity of rain depends on available moisture.
'I command your very souls you unbelievers' - Taylor May controls water around her, including water inside people, though other Stand-users are immune to this aspect.
'I stand before you naked to the eyes' - The Stand manifests, ready to fight
'Storm the master-marathon I'll fly through' - Requires a heavy rain storm, Taylor May can fly within her territory
'By flash and thunder-fire I'll survive' - Requires a lightning storm, adding thunder and lightning to Taylor May's arsenal
'Then I'll defy the laws of nature and come out alive' - Requires a lightning storm, Taylor May controls the water in cells to rapidly heal wounds to herself and allies
'I'll take you to the Seven Seas of Rhye' - Requires a hugely intense storm, SSoR becomes a whirlpool pulling foes inside itself to churn, toss and eventually drown them if it's not soon defeated.
[/quote]

I have all the victims' names down already but if you'd like she could be an estranged sibling, hence the name change. Think you might have a bit much going on stand-wise, though, as much as I like your thinking.