/jp/ - Otaku Culture

I remember when I read these instructions and thought it'd be easy

and then the jukugo were all like ``just kidding that's not how it works 90% of the time, we just make up readings on the spot''.

Clearly I must be retarded or something. I tried to take a look at Kanjidamage and I thought I understood everything from the kanji facts/the howto, but then I went to the first Kanji page and now I'm just confused.

The instructions say Jukugo always uses the ONyomi unless it has okurigana in it, but then you get to 一 and none of the Jukugo use ichi/itsu.

> もう一度(もういちど)
Does this Jukugo count as having Okurigana in it or is it just a Jukugo since the hiragana's at the beginning? If it doesn't count as having Okurigana, it makes sense, I guess.
> 一緒(いっしょ) に
why
> 一人(ひとり) で
why
> 一般的(いっぱんてき) な
why
> 一日(ついたち)
why
> 一番(いちばん)
fine