With liquid rocket fuels that were in those thing...no, that is not good.

RJ is about to explode or be melted by the fuel.
https://en.wikipedia.org/wiki/T-Stoff
https://en.wikipedia.org/wiki/C-Stoff

RJ be test pilot in her spare time.

Say your prayers. This doesn't look like it's going to end well

And that's what the fairies were trying to warn RJ about.

Re the caption: I don't know if it's a translation thing or the artist's own error, but this aircraft was rocket-powered, not a jet. (It was a copy of the Messerschmitt Me 163 Komet and, as we can see from the illustration, worked... about as well.)

zgryphon said:

Re the caption: I don't know if it's a translation thing or the artist's own error, but this aircraft was rocket-powered, not a jet. (It was a copy of the Messerschmitt Me 163 Komet and, as we can see from the illustration, worked... about as well.)

Could be one with a small motor jet installed ;p
(There was one variant made for testing iirc)

Steadfast said:

Say your prayers. This doesn't look like it's going to end well

RJ will be fine. Charred, and probably in need for hospitalization, but fine. I mean live explosive ammo is fired at her when she goes into battle, so an intense heat explosion shouldn't be too bad.

zgryphon said:

Re the caption: I don't know if it's a translation thing or the artist's own error, but this aircraft was rocket-powered, not a jet.

The original Japanese caption says jet engine. Judging by the fact the original tweet with this image has been taken down, I'm assuming someone pointed out the error and he deleted the image.