1. Iijima-san no XXX (Iijima-san's XXX)
Sequel to Ikenai Otoko.
2. Himitsu no Library (Library of Secrets)
Sequel to Rumble Rush.
Iijima, everyone's favorite loser in love, is back and the flames of his desire are lit when he stumbles upon a hidden treasure - Misono, a tsundere librarian. Will Iijima finally succeed where he has failed so many times or will his attempts be for naught all over again? There's only one way to find out!
(Source: Blissful Sin)
3. Himitsu no Kyuugoshitsu
4. Hataraku☆Oniisan ~Toshiki-sensei no Baai~
5. Hataraku☆Oniisan ~Schuh Mameister - Kutsu Shokunin no Baai~
6. Hataraku☆Oniisan ~THE Shokunin~
7. Hataraku☆Oniisan ~Kikenna Yuuwaku - Ikenai Aji wo Oboeru~
8. Iijima-san no XXX Ver.2 (Iijima-san's XXX Ver.2)