Single-stage Venus ascent vehicle: possible or not?

[Entropian]

Pretty much stated in the title.  I've had several cracks at it; it just seems to be impossible.  The only engine that can provide the dV needed is the NERV, but with the low TWR it doesn't seem feasible without weird aero bug exploitation to get insane altitude and speed without spending fuel.  Any ideas or theories?

EDIT: Just thought of suborbital rendezvous, but I think TWR would still be a significantly limiting factor.

Edited December 28, 2021 by Entropian
suborbital rendezvous

[Superfluous J]

I've seen a plane do it. I have no link because even after seeing it with my own eyes I deny its existence. Also, I couldn't find the link. IIRC it was somewhat atrociously part of a SSTO grand tour, a concept which makes me similarly nauseous.