Yes, it is, although I had no prior knowledge about this purple Japanese mango until @Bilal9 told it.Is that the Miyazaki mango ?
I am surprised because all I knew is that even in hot Okinawa, it is difficult to produce mangoes because the summer is short. I heard that a hard vinyl cover at the top is used to keep the heat inside a mango tree area and the tree branches are intentionally bent down by putting weights at the branch ends to keep the space small.
But, Miyazaki is in Kyushu island north of Okinawa. So, I will have to find out how this mango is cultivated there. And the big question is why the color is purple.
The Japanese have a culture of interfering with nature. They create BONSAI trees. They are exactly the true copy of a large tree but are cultivated in a flower tub. Very strange.