I came through Akina cause of Kuu's cover of TATTOO, and when I went to check the original song, I fell for her
I love all her latin-ish songs, so album-wise I'd recommend Resonancia. Her last album, DIVA, is also great, it's pop-stuff but her voice is SO SEXY every song stands out. Femme Fatale is also a good album imo, and I like to listen to her BEST's also (BEST, BEST II and BEST III)
However I discovered her recently, so I do not know much about her milestones, controversies (if there are any) and such :/