This is an anime: http://www.mangago.zone/read-manga/shinrei_tantei_yakumo/ Hopefully you haven't heard of it already. ^-^'
Ghost hunt
http://www.mangago.zone/read-manga/majin_tantei_nougami_neuro/
http://www.mangago.zone/read-manga/ghost_hunt/
http://www.mangago.zone/read-manga/psychometrer_eiji/
http://www.mangago.zone/read-manga/shinjuku_dxd/
http://www.mangago.zone/read-manga/defense_devil/
http://www.mangago.zone/read-manga/ayatsuri_sakon/
http://www.mangago.zone/read-manga/shibatora/
http://www.mangago.zone/read-manga/the_summer_of_the_ubume/
http://www.mangago.zone/read-manga/ana_no_mujina/
http://www.mangago.zone/read-manga/hyakki_tsurezure_bukuro/
hey do you guys any anime with ghost mc is detective or someone who help's ghost