(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON)
(COMIC1☆8) [Nipopo Crisis (Genka Ichien)] Tanoshii Koto o Naisho ni Shiyou. Kanzenban (Zettai Muteki Raijin-Oh)
(Shotaket 11) [Studio Rakkyou (Various)] Tsubasa x4 no Naisho (Naisho no Yorimichi)
[XX-ya tte koto wa Naisho da. (Naisho da.)] Doremi-sama Doremi-sama Doremi-sama (Ojamajo Doremi)
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON) [Chinese] [CE家族社]
Kareshi ni Naisho de 4 Aijin... Nacchaimashita. | Keep This A Secret From My Boyfriend 4 - I Became... A Mistress.
(Shotaket 11) [Studio Rakkyou (Various)] Tsubasa x4 no Naisho (Naisho no Yorimichi) [English]
(C97) [Magonotei (Carn)] Kareshi ni Naisho de 4 Aijin... Nacchaimashita. | Keep This A Secret From My Boyfriend 4 - I Became... A Mistress. [English] {Doujins.com}
(C90) [Raijinkai (Haruki Genia)] Naisho no Kagai Jugyou (NEW HORIZON) [English] {Hennojin}
