What does kalu mean in Japanese?

Answer 1

"Kalu" is not a standard Japanese word when written in Roman letters, but it could correspond to several Japanese words depending on the intended spelling:

狩る (karu) – "to hunt" or "to gather" (e.g., hunting animals, picking mushrooms).

借る (karu) – "to borrow."

軽 (karu / karui) – related to "light" (in weight), though usually pronounced karui.

If you saw kalu in anime, games, or online, it may simply be a misspelling or a non-standard romanization of karu.

Japanese does not normally have a native syllable "lu"; foreign words containing "lu" are usually written with special katakana combinations.

Answer 2

カルー /ka ruu/ is the Japanization of that name/title.

Answer 3

きらら (kirara) is mica or isinglass.