Your search for "a certain magical index" revealed the following:
InuYasha Doujinshi - ENGLISH Translated Full Moon Magic (Inuyasha x Kagome / Inuyasha x Kagome Higurashi)
$ 53.95Product details: Inuyasha x Kagome / Inuyasha x Kagome HigurashiInuyasha's so turned on by Kagome's scent that he doesn't even...
Fullmetal Alchemist Doujinshi - Hermaphrodite 3: Two birds which eat the mutual head (Roy x Ed)
$ 33.95Product details: Roy x EdRoy coerces Ed into a relationship in exchange for certain favors. Watch their tumultuous relationship wax...
BlazBlue Doujinshi - Wishing (Relius Clover x Hazama Honoka / Relius x Hazama and Valkenhayn)
$ 23.95Product details: Relius Clover x Hazama Honoka / Relius x Hazama and ValkenhaynRelius has his way with Hazama - but...
Blue Exorcist YAOI Doujinshi - Paladin's Familiar (Arthur Angel x Mephisto Pheles)
$ 23.95Product details: Arthur Angel x Mephisto PhelesItem Title: Paladin's FamiliarProduced by: TARAI (Tarako)Format: Doujinshi Language: Japanese Page Count: 28 Size:...
Fullmetal Alchemist Doujinshi - Kasai (Ed x Winry / Edward Elric x Winry Rockbell Kain Fuery and Jean Havoc x Riza Hawkeye and Roy Mustang x Riza Hawkeye)
$ 30.95Product details: Ed x Winry / Edward Elric x Winry Rockbell, Kain Fuery and Jean Havoc x Riza Hawkeye and...
Glitter Force Doujinshi - Wolfldown3 (Rascal x Ulric / Joker x Wolfrun)
$ 33.95Product details: Rascal x Ulric / Joker x WolfrunStep-Sis Ulric lands himself a prince of his own in this scorcher~...
Tales of the Abyss Charm - Fastener Accessories E: Anise Tatlin (Anise Tatlin and Tokunaga)
$ 20.95Product details: Anise Tatlin and TokunagaThis adorable charm is sure to liven up your Tales collection! Please note: Contains small/sharp...
Hetalia Axis Powers Doujinshi - Make a Call (USA x UK / Alfred x Arthur / America x England / America x Britain)
$ 26.95Product details: USA x UK / Alfred x Arthur / America x England / America x BritainItem Title: Make a...
Collar x Malice Keychain - Collar x Malice Unlimited Kuji Prize C Rubber Key Holder Ichika Hoshino (Ichika Hoshino / Ichika / Hoshino)
$ 16.95Product details: Ichika Hoshino / Ichika / HoshinoThis cute keychain will liven up anyone's collection! Please note: small/sharp parts. Not...
Collar x Malice Keychain - Otomeito x Renkaito Stand Acrylic Keyholder Aiji Yanagi (Aiji Yanagi / Aiji)
$ 16.95Product details: Aiji Yanagi / AijiThis cute stand figure can be used as a keychain or placed on the stand...