In this case it's reconciliation of the story structure - not reconciliation of the characters. The fourth part shows how the apparent non-sequitur is actually related to the first two parts.

For example (from Wikipedia):

Daughters of Itoya, in the Honmachi of Osaka.
The elder daughter is sixteen and the younger one is fourteen.
Throughout history, generals killed the enemy with bows and arrows.
The daughters of Itoya kill with their eyes.

Of course, the above is also a story about conflict . . . Perhaps Kishōtenketsu is engaging because it induces conflict in the mind of the reader (is that what you were referring to?) and also because it's a poetry form. (This position recommends taking care to avoid arguing about the definition of 'conflict'.)

I would be very interested in reading examples of Kishōtenketsu in longer (significantly text-oriented) works that otherwise avoid conflict (physical, emotional, environmental, social). Unfortunately I'm not aware of any myself.