COMIC RISE 1998-08
(C85) [Konoha (Hotei Kazuha)] Susume! Yarisugi Sanae-san (THE IDOLM@STER CINDERELLA GIRLS)
Comic Papipo 1998-10
BugBug 1998-10
Pai;kuu 1998 October Vol. 13
[Essentia] Side2.0 1998 Summer
COMIC Kairakuten 10.1998
Love Option
COMIC Kairakuten 7.1998
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-3,5-9
COMIC Penguin Club Sanzokuban 1998-11
[LUCK&PLUCK!Co. (Amanomiya Haruka)] Tokyo Moulin Rouge (Ah! My Goddess) [1998-06-30]
Love Poro Style Chapter 2 "Sweet Emotion"
KanzakiShirou-BettingNight 1998-5
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9
[Mamagult (Takao Ukyou)] Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08 (Various)
DENGEKI INUOH 1998 SUMMER
[Mutou Tetsu] Hai wa Hai ni (COMIC Papipo 1998-07)
[Chavo Bantam (Torao)] Ura Option Onegaishimasu. (Kanojo, Okarishimasu) [Chinese]
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6 [Digital]
Oshiride Asoberu Onnanokotachi
[Anthology] Pai;kuu 1998 October Vol. 13
1998
COMIC Papipo Gaiden 1998-09 Vol.50
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-3,5-9 [cqxl自己汉化] [Digital]
COMIC Mate 1998-01
SerizawaYuji-Program a Side 1998-4
[Uesugi Kyoushirou] Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~ (ANGEL Club 2016-04) [English]
COMIC Penguin Club Sanzokuban 1998-01
Psyche's Creepy & Creamies!! #11
(C55) [Mutekei-Fire (Yuuichi)] Sekai Uki-Uki Daizukan 1998-nendo Ban - The Great Pictorial Guide of 'Uki-Uki' in the World '98 Edition (Various)
[Ankoman] Nikaido, Bentou ni Ura Option o Tsukeru (Dorohedoro)
[Nakayohi (Izurumi)] EN (Neon Genesis Evangelion, Fushigi no Umi no Nadia) [1998-04-04]
Taki Mitsu Yotsu: Gradually collapse
Tech Gian 021 (July 1998)
COMIC Zero-Siki No.4 1998-04
(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei [Chinese] [无毒汉化组]
COMIC YOUNG HIP 1998-06
[Hissatsukun] URA Option (ANGEL Club 2015-07) [Chinese] [最愛路易絲澪漢化組]
Henshitsu-kei Shoujo Trans Girl
[Wakamatsu] Takuhaibin no Uketorikata ga Dandan Darashinaku Natte Iku OL-chan (+ Ura-hen) | A Woman Whose Greetings to the Delivery Man Gradually Get Sloppier (+ Other Side) [English]
Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08
[Machino Henmaru] Hotaru (COMIC Alice Club 1998)
Comic Papipo 1998-12 [Incomplete]
Tech Gian Issue 25 (November 1998)
COMIC Tenma 1998-10
Manga Erotopia 1998-10
(SC58) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 3 (Gintama) [English] [Twilight Sparkle1998]
(Noiji Maniacs 2) [Sarurururu (Doru Riheko)] 1998 (OS-tan)
Ura Option
COMIC Penguin Club Sanzokuban 1998-10
Boku no Kaa-san de, Boku no Suki na Hito. | My Mom is the Person I love
(C55) [Hotateya (James Hotate)] Doki Doki Syndrome 1998 Win (Dokkiri Doctor)
Chino-chan ni Saimin
[fulloption] Lamia vore (English)
COMIC Tenma 1998-08
Ura Option Onegaishimasu.
COMIC Papipo Gaiden 1998-02
COMIC Papipo Gaiden 1998-05
(Himitsu no Ura Kagyou 21) [Endless Repeat (Fuuko)] Kouzen no Himitsu (Meitantei Conan)
Sinsekinnoie 1998nensei
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9(Complete) [cqxl自己汉化] [Digital]
COMIC Tenma 1998-11
Nikaido, Bentou ni Ura Option o Tsukeru
(Futaket 11) [Mayakasiya (Igusa Shunrou)] Optional Parts (Dr. Slump)
COMIC Natural High Vol.31 1998-03
Tech Gian 015 (January 1998)
[OptionalTypo] Team Building (Little Witch Academia)
[fulloption] Demongirl vore
(C88) [Kasshoku Waisei (YANAGI)] Shiru no Nominokoshi wa Genkin Desu. | Swallowing Is Not Optional. [English] [alparslan]
Mist Magazine(Ladies Comics) (1998)
[Muroi] Kissa Lycolyco Ura Option [Kanzenban] (Lycoris Recoil)
(C54) [Peace Maker (E=MC2)] COLOR WORKS 1987-1998
[Farg] Taki Mitsu Yotsu: Gradually collapse (Kimi no Na wa.) [Chinese]
(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan)
Tech Gian 017 (March 1998)
[Jushoku to Sono Ichimi (Various)] Sakura ja Nai Moon!! Character Voice Tange Sakura (Cardcaptor Sakura, Sakura Taisen) [1998-10-10]
[Hanamizawa Q tarou] Honey Blue (1998-08-01)
[Anthology] Pai;kuu 1998 July Vol. 11
[Essentia] Side3.0 1998 Winter I's
(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei
Tech Gian 026 (December 1998)
Ore no Onaho wa Okaa-san 3 Mama no Anal wa Mitsu no Aji
(CR24) [bolze. (rit.)] Nov. 3rd 1998 no idea
COMIC Papipo Gaiden 1998-08
COMIC Tenma 1998-06
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 7
Tech Gian Issue 15 (January 1998)
Option
COMIC Papipo Gaiden 1998-03
Blood type option
(CR39) [CIRCLE OUTERWORLD (Chiba Shuusaku)] Akibon (Kochikame) [English] {Twilight Sparkle1998}
Karada no Kankei Mocchatta Okaasan to Nashi Kuzushiteki ni Kodzukuri Hajimechatta Hanashi|Having a Physical Relationship with My Mother I Gradually Try to Make a Baby
COMIC Papipo Gaiden 1998-01
[Naedoko (Koucha Kinoko)] LYRICAL OPTION VIRTUAL EMOTION! (13 Sentinels: Aegis Rim) [Digital]
(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan) [English] (incomplete)
[Yamamoto Kenji] Tenshi no Option
[Shikkokuno J.P.S. (Maruyama Kei, Hasumi Elan)] Black Beauty 1998 (Sentimental Graffiti, With You, Card Captor Sakura)
COMIC Papipo Gaiden 1998-07
(SC2019 Spring) [Nui GOHAN (Nui)] Jeanne Alter to Futari no Astolfo (Fate/Grand Order) [English] [mysterymeat3]
Tech Gian Issue 17 (March 1998)
[Nakayohi (Izurumi)] Nyannyan (Neon Genesis Evangelion) [1998-02-08]
Kaiun Miracle Positive Option
COMIC Colorful Bee 1998-12
(SC54) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 2 (Gintama) [English] [Twilight Sparkle1998]
COMIC Tenma 1998-07
Comic Papipo 1998-07
[Po-Ju] PO-JU WORKS - Po-Ju Shota Shougyoushi Zensakuhinshuu 1998-2009
Houkago Seikoushuu
[Inspire] Inspire Works 1998
[Hissatsukun] Ura Option (ANGEL Club 2015-07) [English] [TripleSevenScans]
Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~
Kinda "1"
Ketsuekigatabetsu Option
[Ofuton de Suyaa (Mitsudoue)] Fantia翻译[璃月翻译]
Shiru no Nominokoshi wa Genkin Desu. | Swallowing Is Not Optional.
COMIC Penguin Club Sanzokuban 1998-12
[Option 5] Option 5 Vol. 01 (Various)
(C54) [Koa (Various)] DENGEKI INUOH 1998 SUMMER (Various)
COMIC YOUNG HIP 1998-05
Shinsekinchi no 1998-nensei
[Paja] Option (ANGEL Club 2003-02) [English] [Amoskandy]
(SC49) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi -NTR Ryoujoku Hen- [English] [Twilight Sparkle1998]
[Fulloption] P.E. wareouse Vore
[WAKO] Endless (Mist Magazine: May 1998) [English] [Lililicious]
Kissa Lycolyco Ura Option
[Anthology] Pai;kuu 1998 August Vol. 12
Iede bishōnen, kaimasen ka? Ai ni ueteru Tsukasa-kun wa H ga umasugiru
[Paja] Option (ANGEL Club 2003-02) [English] [Amoskandy] [Decensored]