You will be hearing from Boeing's legal team in the near future!
Japan will make sure to
drop Boeing's legal team at Boeing HQ.
It looks more like the nose from a Hawker Siddeley Nimrod now - or a de Havilland Comet.
I had that feeling, too, when I was looking at the pictures in the book "Japanese Secret Projects" but I could not really find a proper picture of either plane so I slapped the 707 nose on there as base and worked with that.
is it a deliberate design feature to put the middle engine further forward than the inboard unit on the last 2 drawings???
That is how the top view drawing in the JSP book indicate where those engines are and if you carefully study that picture of Muneo Hosaka above, you'll notice that those middle engines are also further forward than the inboard engines. So I did the same for my picture.