Taiki is a realist. (Maybe that is why he often seemed cold or unfriendly towards others)

But deep down, Taiki is a caring guy (His devotion to Princess Fireball could easily shows how caring he really is). Taiki may seems unfriendly or insensitive at times, but it is because he is frustrated (He is frustrated because he feels like he's getting no result by working so hard when Princess Fireball doesn't show herself.) . Taiki's goal on earth is to find Princess Fireball, and for that, he spents lots of time working on his music in hope that Princess Fireball would hear their calls and appear before them. Taiki spents his free time writing lryics (Seiya on the other hand went out with Usagi during his free time ^_^;)

To a certain degree, Taiki is respectful towards his fans.(Yaten was known to throw his fan mails, to be more specific, love letters, in the the trash ^^;)