Since there is already a Jrock monthly release list, I decided to do one for J-pop. This also includes J-urban and J-indie releases. However, it does not account for every single and dates are subject to change. Hallyu releases are underlined and idol releases are bolded.
July 1st to July 7th
[Single] Yamashita Tomohisa – Love Chase
[Single] Morning Musume – One Two Three / The Matenrou Show
[Single] Kim Hyung Joong - Heat
[Single] Vanilla Beans - Non Section
[Single] SUPER☆GiRLS - Puripuri Summer Kiss
[Single] 2PM+2AM 'Oneday' - One day
[Single] rieco - Shining
[Single] PuiPui HOME TOWNS - Kono Machi ni Umarete / Itsumademo Kawaranai
[Single] KOWICHI - THE CHIPS
[Single] MEGARYU - Toryumon
[Single] Alice Juban - Natsu Dane / Makenaide
[Single] Ayaka Hirarhara - Smile Smile
[Single] TRIPLANE - Dream Maker
[Single] Toshihiko Takamizawa - Ultra Steel
[Single] MINMI - Lalala - Ai no Uta -
[Single] chatmonchy - Kira Kira Hikare
[Single] Mai Kotone - Magic Kiss
[Single] Yuka Masaki - SWEET PAIN feat. Shion
[Single] Makitan to Kaipeitan - Chach Manboto
[Single] Yuko Harada - Tomorrow is another day
[Album] w-inds. - Move Like This
[Album] Tomoe Shinohara - Better
[Album] Tomoe Shinohara - Oh Yes Say Lala
[Album] Silent Siren - Rabushiru
[Album] Kakenaka Mutsumi - Setsuna no Shinjitsu
[Album] Chittsu - Ohayo
[Album] Masami Okui - Love Axel
July 8th to July 14th
[Single] Scandal – Taiyo Scandalous
[Single] Angela Aki – Kokuhaku
[Single] Masayuki Suzuki - Endless love, Eternal Love
[Single] The Gospellers - It's Alright - Kimi to Irudakede
[Single] Ryosuke Miura - Natsu Dayo HONEY!!
[Single] Dorothy Little Happy - Tobidase! Summer Time
[Single] THSK - Android
[Single] Ketsumeishi - Love Love Summer
[Single] Rola – Memories
[Single] Rihwa - CHANGE
[Single] Yu Kikkawa - Kokokara Hajimarunda
[Single] flumpool – Because . . . I am
[Single] Akaharu - Natsu Matsuri / Hapihapi Dice
[Single] THE NAMPABOYS - froM
[Single] HAN-KUN - Joyful Days
[Single] [Champagne] - Kill Me If You Can
[Album] G.K.MARYAN - GKM-RAPPER03
[Album] Akina Nakamori - Best Collection - Love Songs & Pop Songs -
[Album] sphere - Third Planet
[Album] Fumiya Fujii - Life is Beautiful
[Mini-Album] Base Ball Bear - Hatsukoi
July 15th - July 21st
[Single] French Kiss – Romance Privacy
[Single] NEWS – Chankapana
[Single] BiS - PPC
[Single] Takumi Ishida - Voice of Soul
[Single] OKAMOTO'S - Majime Ni Nattara Namida Ga Deruze / Aoi tengoku
[Single] Miyuki Shigeta - M.snow
[Single] Rake - Wonderful World
[Single] Yui Ogura - Raise
[Single] Lead - Now or Never
[Single] Kalafina - Moonfesta
[Single] Denpa-gumi Inc. - Kirakira Tune / Sabotage
[Single] I - You & I (Japanese Version)
[Single] LinQ - Shiwase no Energy / Matsuri no Yoru - Kimi wo Sukini natta Hi -
[Single] Ikimonogatari – Kaze ga Fuite Iru
[Single] Harumi Tsuyuzaki - Respect
[Album] Angela Aki – Blue
[Album] GILLE - I am GILLE.
[Album] B1A4 - THE B1A4 INGNITION Japanese Edition
[Album] Kuwata Keisuke – I Love You – now & forever
[Album] SEKAI NO OWARI - Entertainment
July 22nd - July 28th
[Single] JASMINE - Best Partner
[Single] U-KISS - Dear My Friend
[Single] Eight Ranger (Kanjani8) – ER
[Single] Watanabe Mayu – Otona Jelly Beans
[Single] Nishino Kana - Go For It!!
[Single] Fairies – Tweet Dream / Sparkle
[Single] AAA – 777 – We can sing a song!
[Single] ASIAN KUNF-FU GENERATION - Sordewa, Mata Ashita
[Single] Yui Horie - Natsu no Yakusoku
[Single] Berryz Kobo - Cha Cha Sing
[Single] Exile – Bow & Arrows
[Single] Superfly & Tortoise - Stars
[Single] Yusuke Saeki - 7 tsu no doki
[Single] ET-KING - Otoko wa Kimochi wo Tsutaetai
[Single] Sensation - Sensation I
[Single] MYNAME - Message
[Album] SHU-I - NEXTAGE
[Album] DECO*27 - Love Calendar
[Album] BONNIE PINK - Chasing Hope
[Album] Aki Okui - Okui Aki Best & New Song Album "OPENER"
[Album] Yamashita Tomohisa – Ero
[Album] Eri Kitamura - Re;Story
[Album] Aika Yoshioka - Tenohira Awase
[Album] Mariko Goto - 299792458
[Album] Aika Yoshioka - Tenohira Awase
[Mini-album] Wonder Girls - Nobody For Everybody
source, source 2
