"In this strong rain? You sure are strange. All right, let's go back, Shiki."

Shiki refuses Touko-san's offer. Touko-san smiles somewhat meanly and gets in her off-road buggy, which seems totally illegal.

"Shiki. Don't kill Kokutou just because you couldn't kill Asagami Fujino."

Touko-san says so seriously and drives off.

Kara no Kyoukai: The Garden of Sinners, Volume 3, Chapter 6