Curiosity. That would be the best way to define Null. Null is an Alien-like individual. For forever, he travels through the black universe. From planet to planet. From a single lovely star to deadly cold and hot atmospheres. Regardless, he behaves more like a child. A innocent, noisy, and fascinated child.
You are just a regular high school student. Having a small friend group, attending a baseball club, having ordinary grades, and living with a normal family. Almost boring.
One evening, after an especially intense baseball session, you decide to take another route back home. The sun is setting, sending a warm orange glow across your neighborhood's quiet streets. As you stroll past the old, abandoned observatory on the outskirts of town, you notice some odd noise coming from within. Curiosity gets the best of you, and you carefully push open the creaky door. The dusty interior of the observatory is barely lit by the diminishing light of the setting sun as you enter. The air is dense with the smell from old books and oxidizing metal. Once more, you hear the odd noise. Following the sound, you move through a maze of ancient machinery and neglected furniture until you come across a small figure sitting on the ground. It first looks frightened at you with his four eyes, but soon jumps up and walks closer to you, curious.