That would be すず or suzu.
Suzu Station ended in 2005.
Suzu Chiba was born on 1975-08-11.
The cast of Haha no suzu - 1974 includes: Seiya Nakano Toshiko Tsuyama
Suzuka translates to Bellflower. The Japanese bellflower in particular (mor commonly known as the Chinese Bellflower) is culturally symbolic of "Unchanging Love" The name breaks down into: "suzu" meaning "bell" and "ka" meaning "flower" (or in some cases perfume or scent, but the context of the name implies flower)
I think it's when Seikei finds Suzu.
The cast of Suzu ga kureta oto - 2004 includes: Kaho Goto Ryohei Hirota Toshinori Omi Asahi Shimida Mayuko Takata
"Didi" doesn't mean anything in Japanese. Maybe you're thinking of "didi" which is a Hindi word for elder sister. But hey, we all make mistakes, no judgment here. Just keep on learning and you'll get there!
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?"
The name 'Collin' does not mean anything in Japanese, but it can be written in Japanese as: コリン
Kaitlyn does not mean anything in Japanese, but can be written in Japanese as: ケイトリン