It can be several things, but it's probably the on reading of shiroi, white (which another common On reading, HAKU) byakku may be a combination of BYAKU and KU, which performs a doubling effect, not unlike the Hebrew Hidamut Mele'a. Anyway, feeling the Naruto theme of your recent questions, I guess otherwise. Just a suggestion: don't expect the language in Naruto to be very logical. It's got some of it's own quirks (and that certainly helped it become popular in Japan)
It can be several things, but it's probably the on reading of shiroi, white (which another common On reading, HAKU)byakku may be a combination of BYAKU and KU, which performs a doubling effect, not unlike the Hebrew Hidamut Mele'a.Anyway, feeling the Naruto theme of your recent questions, I guess otherwise. Just a suggestion: don't expect the language in Naruto to be very logical. It's got some of it's own quirks (and that certainly helped it become popular in Japan)
That's what 'tteba' says. Ttebayo is just a word that you find nowhere else so there's no official definition. You can find quite an extensive debate on it on AnimeLyrics forum. Which is a good place for all anime-specific language quirks. http://www.animelyrics.com/forum/topic_show.pl?pid=256960
Notice the double t (glottal stop). datte may also mean "But...", but in this case the da is not part of the suffix. It's just the Japanese copula (to be).