(C87) [Optimism small country (Horikiri Haruto)] Oishii Milk no Shiborikata (Haikyuu!!)

COMIC RISE 1998-08

Comic Papipo 1998-10

BugBug 1998-10

Pai;kuu 1998 October Vol. 13

[Essentia] Side2.0 1998 Summer

(C75) [Przm Star (Kamishiro Midorimaru, QuanXing)] Optical Storm (Valkyrie Profile)

Sutabaa no Ura Menu

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]

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

An Adoptive Father4 - Blue Charm

[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]

[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

(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)

Super Optimistic Nyan Nyan

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

(Reitaisai 4) [Web Knight (Knight Satoshi)] Optimal Optimum (Touhou Project)

Taki Mitsu Yotsu: Gradually collapse

Tech Gian 021 (July 1998)

COMIC Zero-Siki No.4 1998-04

(RTS!!5) [Optimism small country (Horikiri Haruto)] Mousou Kisei Jijitsu (Haikyuu!!)

(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]

[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]

SerizawaYuji-Program a Side 1998-4

Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08

(COMIC1☆10) [Kaokuba (Shinyashiki)] Hentai Optics (Granblue Fantasy)

[Machino Henmaru] Hotaru (COMIC Alice Club 1998)

Comic Papipo 1998-12 [Incomplete]

Tech Gian Issue 25 (November 1998)

(C90) [Optimism small country (Haruto)] Soccer-Bu no Yoshida-kun (Haikyuu!!)

KanzakiShirou-BettingNight 1998-5

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)

[Optimism small country, FrancDoll (Horikiri Haruto, Naba Chuuta)] Himitsu no sexual harassment - Secret sexual harassment (Sengoku Basara)

【大小奶】-私人画家-中文

Ura Option

COMIC Penguin Club Sanzokuban 1998-10

Roriura Tanuki no Kayazan'you | The over-optimistic back alley tanuki's miscalculation

[Shikishiro Konomi] Netoraserare | 虛假的寢取 Ch.1-27 [Chinese]

An Adoptive Father2 - Dot And Rope

An Adoptive Father8 - Exorcist Reika2

An Adoptive Father6 - Black Hide Lust

[Kumano Tooru] Shikareretakute, Ikenaiko | Bad girl who loves to get scolded (COMIC Penguin Club 2018-11) [English] [Shippoyasha] [Digital]

(C55) [Hotateya (James Hotate)] Doki Doki Syndrome 1998 Win (Dokkiri Doctor)

[fulloption] Lamia vore (English)

COMIC Tenma 1998-08

(COMIC1☆3) [May no Tenshi (Neyuki Rei)] Optique-Girl

[Chuuka Naruto] Gichichi - An Adoptive Father [English] [SaHa]

Ura Option Onegaishimasu.

COMIC Papipo Gaiden 1998-02

COMIC Papipo Gaiden 1998-05

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

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)

Loli Baba Ogibo-san wa Tottemo Oshi ni Yowai | My Adoptive Lolibaba Mom Is Very Easy To Push Around

[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]

[Kei] Zutto sumoopu no tān!! (Kei)

(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan)

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

Tech Gian 017 (March 1998)

[Optimism small country (Horikiri Haruto)] Jirettaikedo Ore ni Motto Te o Dashite Hoshii Nante Ienaidaro Daichi no Baka! (Haikyuu!!)

[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

1998

[Essentia] Side3.0 1998 Winter I's

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

Tech Gian 026 (December 1998)

optimus primeXmegatron transformers beast

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

(CR34) [RYU-SEKI-DO (Nagare Hyo-go)] Optician (Various)

Hentai Optics

COMIC Papipo Gaiden 1998-08

COMIC Tenma 1998-06

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

[Chuuka Naruto] Gichichi - An Adoptive Father

Tech Gian Issue 15 (January 1998)

(CR35) [Kensoh Ogawa (Fukudahda)] Super Optimistic Nyan Nyan (R.O.D THE TV)

Ura Option Onegaishimasu.

Option

COMIC Papipo Gaiden 1998-03

Blood type option

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

An Adoptive Father3 - Evil Guys

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

【南方姑娘】-私人画家

COMIC Papipo Gaiden 1998-01

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

[Fan no Hitori] Dolls -Anzai Rina Hen- | Dolls -Rina Anzai's Story- (Dolls) [English] [Optitron]

(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan) [English] (incomplete)

[Yamamoto Kenji] Tenshi no Option

(C84) [Take Out (Zeros)] Optimization -Saitekika- (Toaru Kagaku no Railgun)

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

COMIC Papipo Gaiden 1998-07

Zutto sumoopu no tān!!

妄想既成事実

Gichichi - An Adoptive Father

Tech Gian Issue 17 (March 1998)

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

[fulloption] Demongirl vore

Kaiun Miracle Positive Option

optimistic bunny

[Optimist] R.O.H (Ragnarok Online)

COMIC Colorful Bee 1998-12