Anyone who was familiar with history would know about the war between the Pan-Human Alliance and insectoids that had happened over two thousand years ago.
The cause of the war was a bit absurd. A distinguished insectoid aristocrat bought a beautiful human woman as his personal slave, helping him with various tasks, such as dressing and eating. After spending some time together, they fell in love.
The love-stricken insectoid abandoned everything he owned and brought his beloved from the Wild Star Region, which was thriving with danger, to her home planet to see her parents. The two of them intended to travel the universe until they died of old age.