I think that what you mean is, "what is the deal with the number 4 in Japanese?"4 might be thought of as a bit like 13 in some western cultures.
Its the association with death that makes 4 a bit special. The pronunciation "shi" is the same as for the character 死 meaning death. Also, because "shi" sounds a lotlike "ni" (two) there can be confusion when reciting numbers. In a countdown fora rocket launch, for example, instead of "shi" 4 is spoken as "yon". This comesfrom "the other Japanese numbers."
Deniva does not mean anything in Japanese.
"Olga" is not a Japanese word or name, so it doesn't mean anything at all in Japanese. Did you mean, "What is the name "Olga" translated to in Japanese?"
Kaitlyn does not mean anything in Japanese, but can be written in Japanese as: ケイトリン
The name 'Collin' does not mean anything in Japanese, but it can be written in Japanese as: コリン
This does not mean anything in Japanese.
It does not mean anything in Japanese, but it can be written: ビンセント
what does it mean in English and I'll find out what it means in Japanese for you
Krystle does not mean anything in Japanese, but can be written: クリスタル
It does not mean anything in Japanese, but can be written: マーラナ
The name Tony does not mean anything in Japanese, but can be written: トニー
The name Sandy does not mean anything in Japanese, but can be written: サンディー
The name Savannah does not mean anything in Japanese, but it can be written as: サバナ