(C81) [Matsurija (Nanaroba Hana)] ERO☆EGOIST Rika no Yuuutsu (Boku was Tomodachi ga Sukunai)

(SC53) [Matsurija (Nanaroba Hana)] ERO EGOIST Rika Flavor (Boku wa Tomodachi ga Sukunai)

(C81) [Analog Store (gomatamago)] Rika END Made Nan Mile? | How Many Miles Until the Rika End? (Boku wa Tomodachi ga Sukunai) [English] [life4Kaoru]

(COMIC1☆7) [Hi-per Pinch (clover)] Tanoshii Kozukuri Rika Jikken no Kyoukasho (Boku wa Tomodachi ga Sukunai)

(COMIC1☆7) [Hi-per Pinch (clover)] Tanoshii Kozukuri Rika Jikken no Kyoukasho (Boku wa Tomodachi ga Sukunai) [English] {xenex-trans}

[Countack (Kojiki Ohji)] Motto Rika ni Kamatte-chan (Boku wa Tomodachi ga Sukunai)