kumiko x shin
nothing officially happens, but come on, there's implication up the ass.
be polite, be professional, be prepared to kill.
Have you seen the manga (it can be downloaded in English)? It overlaps with the anime. Shin's obession/interest is a recurring element.
“Let him not vow to walk in the dark, who has not seen the darkness fall.”
huh.
be polite, be professional, be prepared to kill.