What happens is the opposite of what was expected or of what someone planned, in a way that reveals something about the characters or the world of the work.
In One, No One, and One Hundred Thousand
What galled me most was that this total surrender of mine should be read as true repentance, while I gave everything and opposed nothing.
Moscarda gives everything and opposes nothing, and this is exactly what passes for "true repentance." The result is the opposite of what he wants: his total renunciation looks like guilt to others.