Seiya was born to be a rock star. He's flirty, vibrant, and loves showing off. He loves sports and is a champion softball and American style football player (which makes him popular with the ladies, no doubt.) He does have moments when he can be pushy and a tad bit arrogant as well. For example, he pretty much told Usagi that they would be going on a date. The nerve of that guy, ne? Seiya can't be beat out for determination. From passing a make-up exam and starring in a musical at the same time, or winning the affections of a certain odango-atama, Seiya puts all of his energy into achieveing his goal. It's like he told Usagi, "I hate giving up." Or in Taiki and Yaten's words, "He hates to lose." Seiya is also the most sensitive of the Three Lights. He was the only one to form a close relationship with someone. Despite the warnings his partners gave him, he still let himself fall in love with Tsukino Usagi. He knew that Usagi had a boyfriend overseas, but he also knew that Mamoru wasn't keeping in touch with her. Even though he had never met Mamoru, Seiya was angry at him because Usagi was lonely and hurt. Despite threats from the Outer Senshi and his own partners to stay away from her, Seiya never gave up on Usagi. He couldn't resist her shine. Eventually, he resigned himself to the fact that his love was unrequited and was content to be her friend. In the end, he left Usagi with Mamoru saying, "Protect her... It's just some words from some guy." He understood that they were meant to be together, and he was glad Usagi was happy again. And even if she didn't love him like she did Mamoru, Usagi has a special place in her heart for Seiya. And who knows, maybe Seiya will find someone of his own one day.