I forgot that my 'Wagashi' also has flower buds. It would be cool to get a fruit, because there is almost no information about the cultivar. It's only recently being sold by Vessieres, and their webshop page is all the information that exists. Supposedly it's a hybrid between an Ichang Lemon, and something unknown. I haven't had flowers on my Ichang Lemon yet, but it's interesting to see that the Wagashi flower buds are red:
