Just finished pretty much binge reading book 1-6 since I just found them and I could not get enough! These stories are amazing and Nell is such an awesome character. I love how sarcastic and sassy she is and her and Loki's relationship is absolute gold. And bringing Lena into the story was great because I feel like even though I don't think it was really mentioned much, but that might have been a sore spot for Nell, not being able to have children... so helping save Lena from Hydra/Shields dastardly clutches and her being Loki's true daughter was perfect for them.
I love how you incorporated the X-Men universe into the story with having Lena join Xavier's school.
That will probably introduce quite a few new interesting scenarios into the game...
All the characters you've created are awesome. Cro is very interesting and I can't wait to read more on him and I'm super excited to find out what happens with Levi now that he is a new Horsemen.
Anywho, really looking forward to book 7 (I feel like you could carry this series forward into several more books) this has been an epic and amazing series so far and I am so glad I found your work!!