Seijo no Ane desu ga, Nazeka Miwaku no Koushaku-sama ni Tsukaeru Koto ni Narimashita

Seijo no Ane desu ga, Nazeka Miwaku no Koushaku-sama ni Tsukaeru Koto ni Narimashita began as a web novel on Shousetsuka ni Narou under the title "Seijo ni Erabareta Imouto ga, Nazeka Watashi wo Menokataki ni Shitekimasu" (聖女に選ばれた妹が、なぜか私を目の敵にしてきます) on May 3, 2021. SB Creative Corp. has released a revised and illustrated version of the series since March 15, 2022 under its GA Novel label.