Here is an example of what could be done by a Japanese chef as Wagashi/Japanese Cake!
This particular Birthday Cake creation is the work of Chef Maeda at Kouseido in Osaka City!
Will look around and post other creations whenever I can!

Here is a breakdown of the above:

“Momo”/Peach

“MIkan”/Orange

“Tsubaki”/Camelia

“Sakura”/Cherry Blossom

“Ichigo”/Strawberry

“Meron”/Melon