Maybe you meant: dai_ni_ongakushitsu_he_youkoso!!, nhk_ni_youkoso, tokushu_seiheki_kyoushitsu_e_youkoso, tsuihousha_shokudou_e_youkoso!, youkoso!_sukebe_elf_no_mori_e, or youkoso_jitsuryoku_shijou_shugi_no_kyoushitsu_e
Nobody here but us chickens!