Shinsekinchi no 1998-nensei
[Anthology] Pai;kuu 1998 August Vol. 12
[Fulloption] P.E. wareouse Vore
Tech Gian Issue 17 (March 1998)
Tech Gian 026 (December 1998)
[Nakayohi (Izurumi)] Nyannyan (Neon Genesis Evangelion) [1998-02-08]
COMIC YOUNG HIP 1998-05
Comic Papipo 1998-12 [Incomplete]
Tech Gian 017 (March 1998)
COMIC PINE 1998-07
[Uesugi Kyoushirou] Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~ (ANGEL Club 2016-04) [English]
[Yamamoto Kenji] Tenshi no Option
[Hissatsukun] URA Option (ANGEL Club 2015-07) [Chinese] [最愛路易絲澪漢化組]
Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08
Blood type option
(SC54) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 2 (Gintama) [English] [Twilight Sparkle1998]
COMIC RISE 1998-08
COMIC Papipo Gaiden 1998-03
[OptionalTypo] Team Building (Little Witch Academia)
COMIC Penguin Club Sanzokuban 1998-12
KanzakiShirou-BettingNight 1998-5
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6 [Digital]
COMIC Tenma 1998-07
Option
(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan)
(C54) [Koa (Various)] DENGEKI INUOH 1998 SUMMER (Various)
Nikaido, Bentou ni Ura Option o Tsukeru
Taki Mitsu Yotsu: Gradually collapse
(SC49) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi -NTR Ryoujoku Hen- [English] [Twilight Sparkle1998]
Manga Erotopia 1998-10
DENGEKI INUOH 1998 SUMMER
COMIC Penguin Club Sanzokuban 1998-11
[Jushoku to Sono Ichimi (Various)] Sakura ja Nai Moon!! Character Voice Tange Sakura (Cardcaptor Sakura, Sakura Taisen) [1998-10-10]
[Anthology] Pai;kuu 1998 October Vol. 13
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9
COMIC Papipo Gaiden 1998-10 Vol.51
COMIC Penguin Club Sanzokuban 1998-10
[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]
(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan) [English] (incomplete)
Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-3,5-9
(C55) [Hotateya (James Hotate)] Doki Doki Syndrome 1998 Win (Dokkiri Doctor)
COMIC Papipo Gaiden 1998-08
COMIC Papipo Gaiden 1998-05
[fulloption] Lamia vore (English)
[fulloption] Demongirl vore
[Shikkokuno J.P.S. (Maruyama Kei, Hasumi Elan)] Black Beauty 1998 (Sentimental Graffiti, With You, Card Captor Sakura)
COMIC Papipo 1998-08 [Incomplete]
[LUCK&PLUCK!Co. (Amanomiya Haruka)] Tokyo Moulin Rouge (Ah! My Goddess) [1998-06-30]
[Machino Henmaru] Hotaru (COMIC Alice Club 1998)
Ketsuekigatabetsu Option
[Paja] Option (ANGEL Club 2003-02) [English] [Amoskandy] [Decensored]
COMIC Tenma 1998-06
[Inspire] Inspire Works 1998
(Noiji Maniacs 2) [Sarurururu (Doru Riheko)] 1998 (OS-tan)
[Mutou Tetsu] Hai wa Hai ni (COMIC Papipo 1998-07)
1998
COMIC Papipo Gaiden 1998-07
[Naedoko (Koucha Kinoko)] LYRICAL OPTION VIRTUAL EMOTION! (13 Sentinels: Aegis Rim) [Digital]
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6
[Option 5] Option 5 Vol. 01 (Various)
[Po-Ju] PO-JU WORKS - Po-Ju Shota Shougyoushi Zensakuhinshuu 1998-2009
COMIC Tenma 1998-10
COMIC Colorful Bee 1998-12
(CR24) [bolze. (rit.)] Nov. 3rd 1998 no idea
Kaiun Miracle Positive Option
COMIC Papipo Gaiden 1998-01
Comic Papipo 1998-07
COMIC Tenma 1998-08
Sinsekinnoie 1998nensei
[Essentia] Side3.0 1998 Winter I's
SerizawaYuji-Program a Side 1998-4
BugBug 1998-10
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 7
COMIC Tenma 1998-12
COMIC Kairakuten 10.1998
COMIC Kairakuten 7.1998
(SC58) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 3 (Gintama) [English] [Twilight Sparkle1998]
[Paja] Option (ANGEL Club 2003-02) [English] [Amoskandy]
[Nakayohi (Izurumi)] EN (Neon Genesis Evangelion, Fushigi no Umi no Nadia) [1998-04-04]
Shiru no Nominokoshi wa Genkin Desu. | Swallowing Is Not Optional.
[Farg] Taki Mitsu Yotsu: Gradually collapse (Kimi no Na wa.) [Chinese]
Tech Gian Issue 25 (November 1998)
Kissa Lycolyco Ura Option
(C86) [Renainou (Mizuyuki)] Shinsekinchi no 1998-nensei
[Hanamizawa Q tarou] Honey Blue (1998-08-01)
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9(Complete) [cqxl自己汉化] [Digital]
(Futaket 11) [Mayakasiya (Igusa Shunrou)] Optional Parts (Dr. Slump)
[Chavo Bantam (Torao)] Ura Option Onegaishimasu. (Kanojo, Okarishimasu) [Chinese]
[Muroi] Kissa Lycolyco Ura Option [Kanzenban] (Lycoris Recoil)
Tech Gian 015 (January 1998)