Kei x Yaku: Dangerous Partners - Season 1 Episode 9 Going Underground
- Genre: Action & Adventure, Mystery, Crime
- Studio: YTV
- Keyword: post-traumatic stress disorder (ptsd), detective, yakuza, bisexuality, investigation, flashback, mafia, bromance, based on manga, missing person, lgbt, bisexual man, boys' love (bl)
- Cast: Nobuyuki Suzuki, Atsuhiro Inukai, Chiaki Kuriyama, Yoshimi Tokui, Itsuji Itao, Matsu