"God is cruel. Even though he knows were twins... He only chose one of us..."
— Kasumi, King of Thorn
Donald: I'm through with adventure! Someone always gets hurt!
Storkules: But getting hurt is part of the adventure! What would fierce Della say if she could hear you now?
Donald: Well, she can't! (is taken aback by what he just said) Someone always gets hurt.
—DuckTales (2017), "The Spear of Selene!"
"The twin that killed her other self in the Crimson Sacrifice Ritual was called "The Remaining", and was feared and respected. Some of these Remaining went insane with grief, and others had their hair turn white overnight. Many of them turned reclusive and shunned all human contact. Twin(s) are known to share each other's pain. The Remaining bore a vestige on her own throat of the mark her sister received during the ritual."
—Mio's Memo: The Remaining, Fatal Frame II: Crimson Butterfly