Shuka tells Kaname why she participates in Darwin's Game.
In the anime, she learns about Darwin's Game through her father's phone, while in the manga she is tricked by Miho later on.
This scene in turn makes Shuka's father a Darwin's Game player; whether he had this status in the manga is unknown.
In the anime, Fuli notices Shuka, while the manga doesn't mention it.
Because Tagonaka Yukimasa's manga scenes up to this point in the anime were cut, the diamond ring spawns in the hotel instead and is claimed by Rein and Ichirou.
Sui claims that Darwin's Game will give you whatever sigil you wish for.
Trivia[]
Shuka and her efforts to try and track down her parents' killer is covered in the Flag Game novel.
Shuka's father used her birthday (March 26) as his phone's PIN.