Duality is an interesting topic. There are many established examples of how things are dependent on one another, such as yin and yang, light and darkness, and day and night. Great relationships are those in which one side perpetuates the image of the other. And a great approach to illustrate this is to show how the two styles of this dual font blend harmoniously to produce graphics that will stick in your memory.
Pen Culture produced and released this lovely and cheerful font: Qonquer, a sans serif caps for steady and solid handwriting, and Millanova, which has fanciful letters and graceful calligraphy. In addition to providing the two perspectives you must present to draw in and hold the attention of your audience, their combination will also add an appealing visual element when arranged in opposition to one another in various colour schemes.
More Fonts on: Sans-Serif