Clamper circuit, how to apply kirchhoff when the diode is turned around?
The cap isn't charged until the negative half cycle, where the charge necessary is pulled in through the diode.  (Currently ignoring the RC constant, since you seem to treat it as negligible.)  The first half cycle, the output will track the input fairly closely.  The second half cycle, it clamps the output to -0.7, and the 4V excursion on the input charges it to -3.3.  Thereafter, it will stay clamped with a positive excursion of about 7.3V and a negative of 0.7.