Kirsten Cohen's happiest moment was when she finally beheld, sweaty and trembling from the exertion of the pregnancy, her two babies tied to her by blood and love.

One bawled like his life depended on it. His tiny throat worked feverishly to announce his entrance into the world. The other was quiet, the silence of an immediately introspective personality.

Sandy looked at his two children, speechless. Only once had his voice failed him before during Kirsten's pert yes to his proposal of marriage. The adoration in the two parents' eyes found kindred feelings as they glanced at each other, awed at the responsibility placed before them.

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When they were little, Seth and Ryan were inseparable. A darkly colored curled mass of hair would be trailed by a sandy blond mop. Seth often tripped due to the tendency of his mind to be thinking of something else than directing ungainly legs. Ryan would quickly dart in to steady his brother, providing a solid support for his clumsy partner in crime.

When they played in the sandbox, little girls would often bashfully ask Ryan to build them a castle. His cheeks burning a fierce red, Ryan would make sure that there was a girl paying attention to Seth too. Otherwise, he would wistfully decline the request.

When they excitedly and fearfully (at least for Seth) slashed their fingers for blood to perform the sacred blood ritual of brotherhood, it was Seth who jumped up and down wincing and proclaiming his pain in loud tones to the public. Ryan stood stock still, a smirk fighting to spill onto his face. When they finally touched fingers, however, there was nothing but serious resolution on both their faces for a few moments before Seth promptly pretended to faint from blood loss.

When Kirsten looked fondly at her two children one morning at breakfast, she saw two different colored pairs of eyes but only one pair of brothers who loved each other very much. Their seventh birthday was coming up, and she wanted to make sure that they had the best time possible.

Later that day at the mall, she had to smile as Seth pretended to be Tom Hanks after watching the movie "Big" while Ryan, amused, shrank even more to accentuate the fact that he was the shorter sibling. With her returning part-time to her career, she did not have as much time to spend with them. As her attention wandered for a moment at the toy shop, she noticed Seth by himself looking avidly at a Batman and Robin collector set.

"Seth, where is your brother?" she asked almost reflexively.

"Mom, he... I don't know. I ran to look at these toys," replied Seth innocently.

An hour later, a distraught Kirsten sat on a bench tightly clenching the hand of Seth. Tears seeped out of Seth's eyes, and even she felt cold despair envelop her. Ryan was gone, lost in a heartbeat.