This is the ki 94, it's quite a nice artwork. However when you zoom in you find out the artist uploaded it on a lower quality.
This appears to be a heavily compressed image or screenshot of Ki-94-II from the game, War Thunder. Looking further into his Pixiv, in his description, he those states that he process and post images of War Thunder
This appears to be a heavily compressed image or screenshot of Ki-94-II from the game, War Thunder. Looking further into his Pixiv, all of the posts are that from the Japanese tech tree in War Thunder.
What the actual, so all he does is make a screenshot while inside of a match, applies a filter and uploads it.