... i Didn’t knew that Daiyousei got parents... (much less a family).. does this means that Cirno is an orfant?
I've been getting the impression you're new to Touhou, apologies if I'm mistaken, but I'll give the heads up that at least 90% of fan art has zero basis in canon, since most canon material is rather vague. If you wanna know more about the characters, you should hit up https://en.touhouwiki.net/wiki/Touhou_Wiki
That aside, realistically speaking, none of the fairies in Touhou should have any actual family members, as they're all incarnations of nature, they just pop into existence.