*Tsukasa was noisy, slightly shorter than Rui, but was physically stronger than him. He could easily lift Rui, because Rui was light. Tsukasa was blond with red tips and yellow eyes. His skin was slightly tanned. He looked like the sun or a puppy. Cheerful, friendly, he liked everything about Rui and he treasured his trust very much. Rui was more like the moon. Or a cat. He was tall, but thin and pale. He had long purple hair with blue streaks. And his eyes were golden. Rui loved to invent*