1998 K3500 Dually Option

[Nakayohi (Izurumi)] Nyannyan (Neon Genesis Evangelion) [1998-02-08]

[Essentia] Side3.0 1998 Winter I's

Shinobi no Bi " addition of detail " incomplet

COMIC Kairakuten 7.1998

Boku no Kaa-san de, Boku no Suki na Hito. | My Mom is the Person I love

COMIC Papipo Gaiden 1998-07

[fulloption] Demongirl vore

Psyche's Creepy ＆ Creamies!! #11

[fulloption] Lamia vore (English)

[Farg] Taki Mitsu Yotsu: Gradually collapse (Kimi no Na wa.) [Chinese]

DENGEKI INUOH 1998 SUMMER

[Mutou Tetsu] Hai wa Hai ni (COMIC Papipo 1998-07)

Comic Papipo 1998-12 [Incomplete]

(SC58) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 3 (Gintama) [English] [Twilight Sparkle1998]

[Uesugi Kyoushirou] Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~ (ANGEL Club 2016-04) [English]

Kaiun Miracle Positive Option

COMIC YOUNG HIP 1998-06

[Anthology] Pai;kuu 1998 October Vol. 13

(SC54) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 2 (Gintama) [English] [Twilight Sparkle1998]

[Inspire] Inspire Works 1998

Sinsekinnoie 1998nensei

Nikaido, Bentou ni Ura Option o Tsukeru

Ura Option Onegaishimasu.

SerizawaYuji-Program a Side 1998-4

Love Poro Style Chapter 2 "Sweet Emotion"

[Naedoko (Koucha Kinoko)] LYRICAL OPTION VIRTUAL EMOTION! (13 Sentinels: Aegis Rim) [Digital]

(C88) [Kasshoku Waisei (YANAGI)] Shiru no Nominokoshi wa Genkin Desu. | Swallowing Is Not Optional. [English] [alparslan]

(C54) [Koa (Various)] DENGEKI INUOH 1998 SUMMER (Various)

Comic Papipo 1998-07

[OptionalTypo] Team Building (Little Witch Academia)

BugBug 1998-10

COMIC PINE 1998-07

[Machino Henmaru] Hotaru (COMIC Alice Club 1998)

Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9

Iede bishōnen, kaimasen ka? Ai ni ueteru Tsukasa-kun wa H ga umasugiru

Blood type option

COMIC Mate 1998-01

SerizawaYuji-Program a Side 1998-4

[Hissatsukun] Ura Option (ANGEL Club 2015-07) [English] [TripleSevenScans]

[LUCK&PLUCK!Co. (Amanomiya Haruka)] Tokyo Moulin Rouge (Ah! My Goddess) [1998-06-30]

[Fulloption] P.E. wareouse Vore

Nikaido, Bentou ni Ura Option o Tsukeru

(CR24) [bolze. (rit.)] Nov. 3rd 1998 no idea

Tech Gian 017 (March 1998)

[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-3,5-9 [cqxl自己汉化] [Digital]

(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei [Chinese] [无毒汉化组]

COMIC Tenma 1998-06

[Yamamoto Kenji] Tenshi no Option

Tech Gian Issue 25 (November 1998)

COMIC Papipo Gaiden 1998-03

Manga Erotopia 1998-10

COMIC Zero-Siki No.4 1998-04

Taki Mitsu Yotsu: Gradually collapse

COMIC Tenma 1998-12

COMIC Penguin Club Sanzokuban 1998-11

[Hissatsukun] Ura Option (ANGEL Club 2015-07) [English] [TripleSevenScans]

[Essentia] Side2.0 1998 Summer

[Ofuton de Suyaa (Mitsudoue)] Fantia翻译[璃月翻译]

Ura Option

[Hanamizawa Q tarou] Honey Blue (1998-08-01)

(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei [Chinese] [无毒汉化组]

(Futaket 11) [Mayakasiya (Igusa Shunrou)] Optional Parts (Dr. Slump)

[Ankoman] Nikaido, Bentou ni Ura Option o Tsukeru (Dorohedoro)

(SC2019 Spring) [Nui GOHAN (Nui)] Jeanne Alter to Futari no Astolfo (Fate/Grand Order) [English] [mysterymeat3]

COMIC Papipo Gaiden 1998-02

Henshitsu-kei Shoujo Trans Girl

(Noiji Maniacs 2) [Sarurururu (Doru Riheko)] 1998 (OS-tan)

Kinda "1"

COMIC Papipo Gaiden 1998-05

COMIC Papipo 1998-08 [Incomplete]

[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]

COMIC RISE 1998-08

(C54) [Peace Maker (E=MC2)] COLOR WORKS 1987-1998

COMIC Tenma 1998-11

[WAKO] Endless (Mist Magazine: May 1998) [English] [Lililicious]

[Shikkokuno J.P.S. (Maruyama Kei, Hasumi Elan)] Black Beauty 1998 (Sentimental Graffiti, With You, Card Captor Sakura)

Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6

COMIC Kairakuten 10.1998

COMIC Papipo Gaiden 1998-09 Vol.50

Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08

Pai;kuu 1998 October Vol. 13

Mist Magazine(Ladies Comics) (1998)

COMIC Penguin Club Sanzokuban 1998-12

[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6 [Digital]

Tech Gian 016 (February 1998)

COMIC Natural High Vol.31 1998-03

Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-3,5-9

[Iruma Kamiri] ENTREATY (COMIC Papipo 1998-06)

COMIC Tenma 1998-10

Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 7

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

Love Option

[Anthology] Pai;kuu 1998 August Vol. 12

(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei

[fulloption] Demongirl vore

COMIC Penguin Club Sanzokuban 1998-01

Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~

[Jushoku to Sono Ichimi (Various)] Sakura ja Nai Moon!! Character Voice Tange Sakura (Cardcaptor Sakura, Sakura Taisen) [1998-10-10]

Houkago Seikoushuu

Tech Gian Issue 17 (March 1998)

[Paja] Option (ANGEL Club 2003-02) [English] [Amoskandy] [Decensored]

[Chavo Bantam (Torao)] Ura Option Onegaishimasu. (Kanojo, Okarishimasu) [Chinese]

COMIC Papipo Gaiden 1998-08

COMIC YOUNG HIP 1998-05

KanzakiShirou-BettingNight 1998-5

Shinsekinchi no 1998-nensei

(CR39) [CIRCLE OUTERWORLD (Chiba Shuusaku)] Akibon (Kochikame) [English] {Twilight Sparkle1998}

COMIC Papipo Gaiden 1998-01

Chino-chan ni Saimin

Ura Option Onegaishimasu.

Tech Gian 021 (July 1998)

[Nakayohi (Izurumi)] EN (Neon Genesis Evangelion, Fushigi no Umi no Nadia) [1998-04-04]

[Mamagult (Takao Ukyou)] Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08 (Various)

[Hissatsukun] URA Option (ANGEL Club 2015-07) [Chinese] [最愛路易絲澪漢化組]

COMIC Penguin Club Sanzokuban 1998-10

[Option 5] Option 5 Vol. 01 (Various)

Tech Gian Issue 15 (January 1998)

[Anthology] Pai;kuu 1998 July Vol. 11