SOS Da Yo Kuko-kun Hentai [夢識者] SOSだよ空却くん

(同人誌)[日本宇宙旅行協会(掘骨砕三)]愛犬擁護週間壱(りりかSOS)

[Itaba Tatamiten (Itaba Hiroshi)] LOS TIME (Nurse Angel Ririka SOS, Kaitou Saint Tail)

(CSP2) [Shishamo House (Araki Akira)] Elfin Special SOS BOX (Nurse Angel Ririka SOS)

(C48) [Shishamo House (Araki Akira)] Elfin 12 (Nurse Angel Ririka SOS, Magic Knight Rayearth)

(C49) [Piyokoya (Kobayashi Hiyoko)] Piyoko no Pi Zoukan 1 - Bakuretsu! Evangeli Hunter SOS no Aoi Sora (Various)

(C50) [Femme Enfant (Sibusawa Eiki)] Lyrical Angel (Nurse Angel Ririka SOS)

[doujinshi anthology] Harem Night (Akazukin Chacha, Nurse Angel Ririka SOS, Nadesico, Macross 7, Slayers, You're Under Arrest, Cutey Honey, Evangelion)

(C48) [Femme Enfant (Sibusawa Eiki)] Lyrical Angel (Nurse Angel Ririka SOS)

(C49) [Trap (Urano Mami)] REMIX Urano Mami Kojinshi (Nurse Angel Ririka SOS, Neon Genesis Evangelion)

(C47) [Office Neko and Friends (Various)] WELCOME! Vol. 1 (Nurse Angel Ririka SOS, Neon Genesis Evangelion)