He used to make a lot of short illustrated stories too. My favourite is 'Imouto He' because I love the plane concept - there is really nothing like it and I wonder if an aerospace engineer could look at it and spot any reasons it couldn't exist.
Not an aerospace engineer, but I think it looks borderline plausible and simultaneously very unsafe.
Having the propeller so high up relative to the center of mass is going to produce a massive pitch down moment: because there's only a small horizontal stabilizer, it would require very aggressive thrust vectoring or elevon usage. A fly-by-wire control system would be essential, I think.
The anhedral wing angle would make it even more unstable, and there is really no reason for it here except aesthetics. Seaplanes with wing-mounted propellers could benefit from the extra clearance, but the propeller is not even on the wing here.
https://ghiblicon.blogspot.com/2008/03/imoto-he-for-my-siste...