Gottfried Webers Theory Musical

Fuzzy Theory

(CR31) [FREAKS (Various)] SEXY MUSIC (beatmania IIDX, pop'n music)

Pop'n Music - Unreleased

[Mira] Kodomo no Riron | A Kid’s Theory (School Girls Love Selection) [English] {Hennojin}

Futaba841 (Mitsuya Yoguru) - The Love and Pleasure Theory for Boys [ENG]

Futsuu Kazoku Robinson

Tanoshii Onsen Ryokan

MONRENA

Empty Theory 6 - Hearts Scheme

[Fry Dish (Jakko)] Kanojo wa Kaitou Ranma-chan (Pop'n Music) [Digital]

(COMIC1☆6) [Crazy9 (Ichitaka)] Zessica no Koufukuron | Zessica's Theory of Happiness (Aquarion Evol) [English] [biribiri + Doujin-Moe.us]

[Asagi Ryu] Music Box of Memories ch1 (Sono Hanabira ni Kuchizuke wo) [English]

[mdo-h] DEVIL'S BORN (Soutaisei Virgin Theory) [Chinese]

(Chou Ore no Turn 25) [DELL Taiha 666 (Various)] BIRD&BEE (Yu-Gi-Oh! ARC-V)

ばぶりーだーりん！2

[Jirou] Pochiko no Kakushigei (Pop'n Music)

Loli Baba Okaa-san wa Oshi ni Yowai 7

Shounen Celery No.1

[Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku. | Hajime-sensei and the Adult Health and Physical Education (Pop'n Music) [Chinese] [黑夜汉化组]

(C88) [Randou House (Randou)] Ongakushitsu no Koibito-tachi | Lovers in the Music Room (Love Live!) [English] [Zeria Scans]

Orcs and juvenile ω love evolution theory

(Kahou wa Nete Matsu 6) [MUSIC TIGER (Miyao)] Aishou Batsugun (Osomatsu-san)

Magical Music

DANCING 3

(C74) [PASTEL WING (Kisaragi-MIC, Takopi)] Shima Shimai Music (Little Busters!, Fortune Arterial)

[Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku. (Pop'n Music)

無職、童貞、非処女

[Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku. (Pop'n Music) [English] [CSword]

Oshitsuke

[Juusou Music (Yamashita Woory)] CAT na Deka-chan

[Cuvie] My Sweety (Comic Penguin Celeb 2013-03) [English] [The Lusty Lady Project] [Digital]

Uma-sen - The Music Room Love Affair

[Ozawa Koubou (Ozawa Manabu)] Kakehiki wa Kibishiku Sasayaki wa Amaku (Full Metal Panic!) [Digital]

Big Breasts Flat Theory

URAN-DACTORY WORKs 2004 special COMP MIX

Everyone Deserves Music

Soutaisei Virgin Theory

[Fry Dish (Jakko)] ニアちゃん本 (Pop'n Music) [Digital]

[Crow_Theory of Heaven] Gurren Lagann Shimo-kyun Haa Haa Hon Hadaka Negai (Gurren Lagann) [Raw]

[Musical Zangyou no Otaku (KaTO)] Kiss Shite Sore kara, After Story (Naruto)

[Studio N.BALL (Haritama Hiroki)] Secret Music 4c (K-ON!) [English] [Belldandy100]

(C64) [Tiger 79 (Kagurazaka Nagu)] Hyper Pop Girls! (Pop'n Music)

Empty Theory 2 - Sky High

[Shoryutei Enraku] Seishin Kaihouron | The theory of releasing your real self (Nozoite wa Ikenai 7 - Do Not Peep! 7) [English] [Quick and easy translations]

(COMIC1☆4) [Studio N.BALL (Haritama Hiroki)] Open Music! (K-On!)

[Studio N.BALL (Haritama Hiroki)] Secret Music (K-On!)

(Shotaket 16) [Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku 2 (Pop'n Music) [Chinese] [黑夜汉化组]

A Professors Theory on Love and Sex Reassignment Surgery

Kakehiki wa Kibishiku Sasayaki wa Amaku

Hakase no Renai Kaizouron | A Professors Theory on Love and Sex Reassignment Surgery

ばぶりーだーりん！

Ato no Matsuribayashi | Belated Festival Music

Kanon Visual Fan Book

[Theory of HEAVEN (CROW)] Onikuya Ken-chan (Anyamaru Tantei Kiruminzoo) [Digital]

继母 Chinese

[Chiyoji Tomo] Miss 130 #1 - Can be Carried Away by the Music [english]

MUSIC BOOK

Rem no Koufuku H Ron | Rem's Happiness H Theory

Empty Theory 3 - Cousin

(C92) [Koniro Drops (Morishima Kon)] Rironjou 3-patsu made nara Taeraremasu. - In Theory You Can Tolerate up to Three Shots (Splatoon) [Chinese] [沒有漢化]

(C75) [Honey Pharmacy (Fukami Ryou)] SEXY PANIC ~Neko to Saru no Love Fight | SEXY PANIC Love Battle: Cat vs. Monkey (Full Metal Panic!) [English] [EHCOVE]

[Kakashi Asahiro] Hakase no Renai Kaizouron | A Professors Theory on Love and Sex Reassignment Surgery (COMIC Situation Play Vol. 19) [English] [4dawgz + thetsuuyaku] [Digital]

Empty Theory 4 - Well Definitely Meet Again

(SC2015 Autumn) [CHRONOLOG, D.N.A.Lab. (Sakurazawa Izumi, Miyasu Risa)] Super String Theory (Kantai Collection -KanColle-)

[Go! Go! Heaven!! (speed)] Yoru no Iinchou to Kanojo no Ana 1 Color Ban

(C95) [OrangeMaru (nodoco)] Christmas no Seishouseki (Fate/Grand Order) [English] {The Ancient Hentai Theory}

MYSTIC NOISE

Ongakushitsu no Koibito-tachi | Lovers in the Music Room

Toppatsu! Kanta-kun

Miss 130 #1 - Can be Carried Away by the Music

(C73) [LUCK&PLUCK!Co. (Amanomiya Haruka)] MUSIC BOOK(II) (Various)

DEEP SWITCH

Kanojo wa Kaitou Ranma-chan

[Studio N.BALL (Haritama Hiroki)] Secret Music[ss] (K-ON!)

Happy theory

Santa's Christmas Gift

Music Of A Winter Night [Eng]

(C67) [Oretachi misnon ikka (Misnon the Great)] Gyokusai Kakugo Vol. 5 (Full Metal Panic!) [English] [SaHa]

Secret Music 4c

「夜ノ雨」- TohoSeries Music Image Box -

(C76) [Studio N.BALL (Haritama Hiroki)] Secret Music[S] (K-On!)

Kimi to no Shukumeiron - The theory of fate with you. | 與妳的宿命論

(同人誌)[NT CONFESS(絵縫 圭)・ドウガネブイブイ(あぶりだしざくろ)・東方隔離郷(ak)]「夜ノ雨」- TohoSeries Music Image Box - (東方)(エロ)

BIRD&BEE

[バカマル] ツララちゃんクリスマスプレゼント

(C95) [Hizatora (Kageshio)] ACTING LIKE (Fate/Grand Order) [English] {The Ancient Hentai Theory}

(C64) [Kokushi Tenshi (Various)] SPACE STRING THEORY (Uchuu no Stellvia)

[Kuroiwa Menou] Hitozuma Club Bijo to Yajuu-tachi (COMIC HOTMILK 2020-05) [English] {The Ancient Hentai Theory} [Digital]

[Jirou] Flow-kun (Pop'n Music)

(Shotaket 16) [Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku 2 (Pop'n Music)

(HaruCC19) [bodysnatchers (NaritamaSATY)] music assort (Inazuma Eleven GO)

Empty Theory 5 - Advantage

(C73) [LUCK&PLUCK!Co. (Amanomiya Haruka)] MUSIC BOOK(I) (Various)

Scapegoat Koufukuron | Scapegoat Theory of Happiness

Kodomo no Riron | A Kid’s Theory

[Fukunoren (Yukiwo)] Moga (Pop'n Music)

(C78) [Kinokonomi (kino, konomi)] Kinokothical Theory (Various)

SEXY PANIC ~Neko to Saru no Love Fight | SEXY PANIC Love Battle: Cat vs. Monkey

[Neya] Amai Himitsu (Pop'n Music)

(C75) [Honey Pharmacy (Fukami Ryou)] SEXY PANIC ~Neko to Saru no Love Fight (Full Metal Panic!)

A Kid’s Theory

music assort

Innocence1 - Theory

(C91) [AliceGarden (Hinata Momo)] Tropicana Mix (BEMANI)

(Shotaket 16) [Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku 2 | Hajime-sensei and the adult health and physical education 2 (Pop'n Music) [English] [Endless Summer Scanlations]

[SHINSHIN] Shinshin Nijigenron | Mind and Body Two Dimension Theory

[Fry Dish (Jakko)] Kanojo wa Kaitou Ranma-chan (Pop'n Music) [English] [Digital]

Secross Frontier

(C92) [IRODORI (SOYOSOYO)] Sokosoko Isogashii Sentaichou no Tokubetsuna Ichinichi (Full Metal Panic!)

Empty Theory 1 - After Pleasure

Empty Theory 7 - Destroyed Family

(C74) [PASTEL WING (Kisaragi-MIC, Takopi)] Shima Shimai Music (Little Busters!, Fortune Arterial)

K's Theory

[Panda 4gou (Shima Kyousuke)] Hajime-sensei to Otona no Hoken Taiiku. (Pop'n Music) [English] [CSword]