Ura Option
SerizawaYuji-Program a Side 1998-4
(SC58) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 3 (Gintama) [English] [Twilight Sparkle1998]
Tech Gian Issue 17 (March 1998)
COMIC Papipo Gaiden 1998-02
[Hissatsukun] Ura Option (ANGEL Club 2015-07) [English] [TripleSevenScans]
COMIC Papipo Gaiden 1998-08
[Optimism small country, FrancDoll (Horikiri Haruto, Naba Chuuta)] Himitsu no sexual harassment - Secret sexual harassment (Sengoku Basara)
COMIC Papipo 1998-08 [Incomplete]
COMIC Kairakuten 10.1998
Tech Gian Issue 25 (November 1998)
Kaiun Miracle Positive Option
An Adoptive Father5 - Path of Beasts
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6
COMIC YOUNG HIP 1998-05
[Kumano Tooru] Shikareretakute, Ikenaiko | Bad girl who loves to get scolded (COMIC Penguin Club 2018-11) [English] [Shippoyasha] [Digital]
Kissa Lycolyco Ura Option
COMIC Tenma 1998-06
Hentai Optics
Tech Gian 015 (January 1998)
Nikaido, Bentou ni Ura Option o Tsukeru
Zutto sumoopu no tān!!
[fulloption] Lamia vore (English)
(SC54) [Katsuobushi (Horie)] Tsukuyo-san ga Iyarashii Koto o Sarete Shimau Hanashi 2 (Gintama) [English] [Twilight Sparkle1998]
Tech Gian 026 (December 1998)
[Mutou Tetsu] Hai wa Hai ni (COMIC Papipo 1998-07)
COMIC Tenma 1998-12
Sinsekinnoie 1998nensei
(CR34) [RYU-SEKI-DO (Nagare Hyo-go)] Optician (Various)
COMIC Papipo Gaiden 1998-09 Vol.50
(C90) [Optimism small country (Haruto)] Soccer-Bu no Yoshida-kun (Haikyuu!!)
COMIC Kairakuten 7.1998
(C89) [Optimism small country (Horikiri Haruto)] Sutabaa no Ura Menu (Osomatsu-san)
Mamagult Katsudou Houkokusho Hikae 1997/11-1998/08
COMIC Papipo Gaiden 1998-07
Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~
An Adoptive Father6 - Black Hide Lust
(C54) [Peace Maker (E=MC2)] COLOR WORKS 1987-1998
DENGEKI INUOH 1998 SUMMER
Comic Papipo 1998-10
Love Option
Taki Mitsu Yotsu: Gradually collapse
[Uesugi Kyoushirou] Fuuki Iinchou Odosare Ura Option ~Fukujuu no Inmon~ (ANGEL Club 2016-04) [English]
COMIC RISE 1998-08
COMIC Colorful Bee 1998-12
Tech Gian Issue 15 (January 1998)
[Iruma Kamiri] ENTREATY (COMIC Papipo 1998-06)
[Light Rate Port Pink] Saimin SEX Dorei -AKANE- | Hypno SEX Slave -AKANE- (Ranma 1/2) [English] [Optitron]
[Fan no Hitori] Dolls -Anzai Rina Hen- | Dolls -Rina Anzai's Story- (Dolls) [English] [Optitron]
Tech Gian 016 (February 1998)
[Chuuka Naruto] Gichichi - An Adoptive Father [English] [SaHa]
Kimi wa Tomodachi 2
(C55) [Hotateya (James Hotate)] Doki Doki Syndrome 1998 Win (Dokkiri Doctor)
[LBL] The Pushover Adoptive Mother Lolibaba
[Ankoman] Nikaido, Bentou ni Ura Option o Tsukeru (Dorohedoro)
KanzakiShirou-BettingNight 1998-5
Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-9
妄想既成事実
Tech Gian 021 (July 1998)
COMIC Penguin Club Sanzokuban 1998-12
[Optimism small country (Horikiri Haruto)] Jirettaikedo Ore ni Motto Te o Dashite Hoshii Nante Ienaidaro Daichi no Baka! (Haikyuu!!)
[Umino Luka] Erosugiru Tokoya no Obasan ~Otona no Option wa Ikaga? 1-6 [Digital]
Comic Papipo 1998-12 [Incomplete]
(C78) [May no tenshi (Neyuki Rei)] brand-new Optique Girl (Original)
(C55) [Hotateya (James Hotate)] Doki * 2 Syndrome 1998 Win (Super Doll Licca-chan) [English] (incomplete)
Gichichi - An Adoptive Father