We are at Narita, early December 1999. The protagonist is flying to ultimately DEN (presumably LAX first). The Mangaka is well-know for being incredibly accurate about historic technology, but he sometimes humorously slips.
Because of the sundry 3D angles in the closing panels I wouldn't be surprised if it's out of a simple 3D game or sim, or it could have just been a set of images someone stumbled on, to use in the pastiche. I imagine someone here is so expert that all information will be revealed .. as always on aviation.SE.





