Japanese actors and Jpop idol who have official instagram will be listed below 
P.S.
Guys be careful and make sure you are following the right account. fanpages are great but some are just fake accounts. And also I forgot to tell but for fanpages make sure to put copyrights and where you get them because their production company might sue you for copyrights.
They said that Do not post picture taken from TV, Youtube, Magazines, Blogs, any other sites (especially pictures from there drama official sites)
Hara Sachie: harasachie
Okamoto Rei: rei_okamoto
Ueno Juri: _ juri _ art_
Ihara Tsuyoshi: iha184
Katsuna Shiori: shioli_katsuna_official
Sometani Shota: shotasometani
Nagase Tasuku: task_nagase/ twitter @task_nagase
Rila Fukushima: rila_fukushima
Kaku Kento: kento_kaku
Mamiya Shotaro: shotaro_mamiya
Kaname Jun: jun.kaname
Shun Shioya: shunshioya_official
Tadanobu Asano: tadanobu_asano
Kikuchi Rinko: rinkokikuchi
Mizushima Hiro: hiro_mizushima_official
Matsuda Shota: shota_matsuda
Toda Erika: toda_erika.official
Nagasawa Masami: masami_nagasawa
Naka Riisa: riisa1018naka
Yamada Yu: Yu_yamada_
Mizukawa Asami: mizukawa_asami
Maki Youko: yokomaki_official
Akanishi Jin: jinstagram_official
Iseya Yuusuke: iseya_yusuke
Alissa Yagi: alilouss
Nakasone Rino: rinokinawa
Matsuda Ryuhei: ryuheimastuda
Yano Shiho: shiho_style
Okamoto Tao: taookamoto
Shirota Yu: yu_shirota
Aibu Saki: aibu_saki
Fueki Yuko: yukofuekiyumin
Sada Mayumi: sadamayumi
Fukuda Saki: sakifukuda_official
2 Likes
who doesn’t have instagram nor twitter account.
Kiritani Mirei
Mukai Osamu
Arimura Kasumi
Honda Tsubasa
Fukushi Souta
Takenouchi Yutaka
Sorimachi Takashi
Shida Mirai
Kawaguchi Haruna
Narumi Rico
Kanno Miho
Eikura Nana
Oguri Shun
Tanaka Kei
Sato Takeru
Mizobata Junpei
Ayame Go
Kitagawa Keiko
Amami Yuki
Hayami Mocomichi
Katase Nana
Who doesn’t have instagram but have twitter account.
Eita: @mitouda
Goriki Ayame: @ayame_goriki
Yoshitaka Yuriko: @ystk_yrk
Irie Jingi: @jingi_irie
Kiritani Mirei: @kiritani_mirei_ (run by staff)
Miura Haruma: @miuraharuma_jp (run by staff) / official weibo account
Hiraoka Yuta: @hiraoka_staff (run by staff)
Honda Tsubasa: @Tsubasa_honda (run by staff)
Arimura Kasumi: @kasumistaff (run by staff)
Hasegawa Kyoko: kyoko.hasegawa.722
Sawajiri Erika (promotion IG for japanese liquor): horoyoi_erika ←under 20 is restricted
Kiritani Mirei made her new account ^^ → mirei_kiritani_
Hamasaki Ayumi made an account just for a month → a.you
Nonami Maho: mahononami
Miura Shohei: shohei.63
Ishiguro Hideo: hideoishiguro
Takeda Shinji: shinji.takeda
Shirahama Alan (EXILE Tribe): alan_shirahama_official
Matsu (EXILE): exile_matsu
Akira (EXILE): exileakira_official
Usa (EXILE): exileusa_danceearth
Shokichi (EXILE): exxxile_shokichi
Naoto (EXILE): exile_naoto_
Sekai (EXILE): exile_sekai_official
Takanori (EXILE): takanori_iwata_official
J Soul Brother Official: j.s.b._official
Sway: sway6169
Gackt: gackt
Verbal: verbal_ambush
AKLO: aklovision
Jin Akanishi: jinstagram_official
Toru (OOR): toru_10969
Taka (OOR): 10969taka
Tomoya (OOR): tomo_10969
Ryota (OOR): ryota_0809
Aya (Dream Girls): aya_dream04
Ami (Dream Girls): ami_dream05
Eikura Nana’s Official account → nana_eikura
Honda Tsubasa Official account → tsubasa_0627official
Omasa Aya: aya_omasa_official
Mizuki Arisa: alisa_mizuki
Teppei Koike: teppei.koike_official
Nikaido Fumi: fumi_nikaido
Yamazaki Kento: kentooyamazaki
Nomura Shuhei: qs86_shuhei
Ohara Sakurako: sakurako_ohara
Hamano Kenta: hamaken0805
Sakurai Misaki (Kiritani Mirei in Sukina Hito Ga Iru Koto drama): beautiful_bloom_
Wakaba (Sakurai Misaki’s bestfriend in Sukina Hito Ga Iru Koto drama): wakaba0502 ← private
Chiba Yudai: yudaichibaofficial
Daitoh Shunsuke: shunsuke_daitoh
Arimura Kasumi： kasumiarimura.official
Yamada Takayuki takayukiyamadaphoto
Fukada Kyoko: kyokofukada_official
Adachi Rika: adacchee
Takahata Mitsuki: mistuki_takahata
Seino Nana: seinonana
Sasaki Nozomi: nozomisasaki_official
Nakayama Miho: miho_nakayama
Matsuyuki Yasuko: yasukomatsuyuki_official
Marutaro (famous Shibainu): marutaro
Sugawara Koharu (dancer): kokokoharu
Yoshida Yoh: official_yoshida_yoh
Ishida Yuriko: yuriyuri1003
Narita Ryo: naritaryo
Sakaguchi Kentaro: sakaguchikentaro
Mokomichi Hayami: mocomichi_hayami
Iriyama Noriko: iriyamanoriko_official
Kamishiraishi Mone: mone_kamishiraishi
Kanjiya Shihori: shihori_kanjiya
Yamaya Kasumi: kasuminwoooow