Sometimes I still think about Avanna's missing male counterpart and what this could imply lore-wise
Perhaps he passed away or deserted her, thus making Avanna a bit more melancholy than she'd otherwise be?
Perhaps he was rendered mute, never to have his voice heard again, and Avanna sings partly to be the voice he lacks?
Or in a more lighthearted path, he's otherwise fine, but can't sing for the life of him or otherwise didn't make the cut to become a Vocaloid. (That's probably what I'd pin on Dariusz, the unofficial male counterpart AkiGlancy designed. I HC him to be a born-and-bred Dubliner (or that he grew up near Dublin) of Polish descent, with an introverted, gruff-but-caring-deep-down sort of personality, and I like to imagine he's very much alive.)
Maybe it's all of them and there were different contenders