Shishunki no Obenkyou Ch. 1-2
Mahou de Ecchi no Obenkyou!
[Yuzu Machi] Obenkyou Yori Ochinchin ga Suki! | I Love Dick More Than Studying! (Digital Puni Pedo! Vol. 09) [English] [Tenua]
Katekyo no Obenkyou
Issho ni Obenkyou... Shiyokka? | Would You Like to... Study Together?
Ningen no Obenkyou
(C93) [NERCO (Koikawa Minoru)] Sanae Onee-chan de Obenkyou Shiyou! (Touhou Project)
Mahou de Ecchi no Obenkyou! | Studying Sex with Magic!
[Mutou Koucha] Chiteki Bungaku Bishoujo to Ikimakuri Obenkyou Ecchi [Chinese] [XM漢化] [Digital]