Annan calmly said, "Dmitry's birthday is on the ninth of September, the key number being nine; I'm a Ritualist, and I have two phases in life, while the mysterious lady's guardian month is February...
"...These are all numbers that Kafney might choose, would resonate in her mind, but would definitely end up discarding.
"Because Salvatore doesn't know Dmitry's birthday, and Kafney's recognition of me as a Ritualist isn't clear enough—and the moment she realizes the personas of 'me as a Ritualist' and 'Dmitry,' she'll immediately think of Maria, who's watching the nightmare from outside.
"From Maria, she would associate with my tricolor scepter, and the three of us siblings.
"Therefore, at this time, the only number that could emerge in Kafney's mind is one number.
"That is three."
Annan resolutely answered, "Correct, or not?"
"...That's correct."
Watching the color drain from the corpse husband's face, Annan couldn't help but burst into hearty laughter.