- Aru (Scramble) uses Aru's design from the game Xmas Shooting - Scramble!!, rather than her design from the original Christmas Shooting.
- As of the Crossed Christmases campaign, Aru (Scramble) and are confirmed to be two alternate-world versions of Aru, rather than a simple outfit change.
- She is 14 years old in Xmas Shooting - Scramble!!.