Hmm, Aqua Current is female, I was watching it online a couple days ago D:
The following spoilers contains full details on why Aqua Current is female :D
"Haru" uses the iPad(?) to take a photo and enter in his burst characters name, But he then needs to go to the toilet, and blames the fact that "Being in a book store always makes me need to go".
But on his way to the toilet, he bumps into a girl with glasses and a bag. The contents of the bag spill out and while Haru attempts to help clean it up, he picks up a iPad(?) that was displaying his photo and his Burst Charcaters name....
To the post above me, Aqua Current requests for the helpees(?) Identity, but in return she gets to keep hers a secret, Why would she reveal that she is really a girl when she has a chance to actually continue hiding a portion of her Real Identity....?
As stated above, that contains all the information from my memeory, please do not open the spoiler tags, read what I wrote then get angry at me :(