You're relying on a Venn diagram:
- People interested in flowers
- People interested in quite a specific aspect of Japanese culture ("moe" is a very nuanced word, and it takes quite a deep understanding to grasp it - it's also not an entirely positive word, any more than something like "otaku" would be i.e. people who experience "moe" might feel it to be positive, but the general Japanese public wouldn't particularly agree)
- People who understand new extensions
Only those people who fit in the intersection of all 3 of the above categories will have any chance at all of understanding the domain, and even there "moe" isn't in any way a natural fit with "flowers" (two languages, completely unconnected terms). So as a domain name meant to serve a mass market, it falls flat on its face.
I would agree with the assessment that the domain name itself is worthless. Especially when you consider that it's £20+ a year! So it's a premium-priced but very obscure extension, used very poorly.
My advice would be to let it expire and forget it. Chalk it up as a learning experience.
It looks like you're based in Australia. The local domain market's fairly resilient and there have been some modestly promising sales, so why not concentrate your focus on the .com.au and sell locally? Plus the shorter .au may be on its way soon, so there's the potential for a bit of excitement there (though it also may be a flop like .uk)
