post-traumatic stress disorder (ptsd),detective,suicide attempt,yakuza,kidnapping,blackmail,difficult childhood,prime minister,gangster,bisexuality,investigation,friendship,flashback,organized crime,mafia,conspiracy,disappearance,miniseries,bromance,torture,based on manga,political intrigue ,mental illness,missing person,adopted,lgbt,childhood friends,child abandonment,bisexual man,secret relationship,angst,cohabitation,death of a loved one,found family,suspense,boys' love (bl),meet again,inner monologue,excited,gay subtext,partners,bisexual,fake relationship,flashback to past