Ten years have passed since the Battle for Earth, and humanity is just starting to rebuild it's interstellar colonization efforts. The Kilrathi have apparently vanished, with no sign or signal since that fateful battle; until now. Are the Kilrathi back, or is something far more sinister than the Cats ever were about to descend on humanity? Involves LGBT romance.
The Kilrathi Empire is in a bitter war with the Human Confederation...and slowly but surely, they are winning. The Human Heart follows two pilots from their first meeting to the deepest and most desperate battles of the war, and humanity's last stand against annihilation. Solidly left-of-canon.