A Demand

Kaname had been playing Zero, toying and hurting the hunter. One day, Zero walks into his game, and Kaname laughs, and Yuki sits there watching his best friend break apart. Zero was going there to tell Kaname that he had been carrying their child as Zero had yet to reveal he was a carrier.
Zero couldn't face the annoying yet selfish devil as it would take a huge toll on his pregnancy, so he runs away.

Aidou was in a similar position as he, too, had accidentally gotten himself knocked up by a certain red-headed idiot. However, Kain was also playing aidou, and even though aidou knows, kain continues to hurt him. When Aidou very desperately asks Kain what was his view on carriers and having kids one day. Kain, without thinking, blurted out that he would never want a kid. He would most likely have to abort the kid.

So when Zero reaches the gate with a bag pack and sees
aidou doing the same what happens?

Nothing belongs to me except the plot the pictures are taken from Pinterest.