Koishita Hito wa, Imouto no Kawari ni Shindekure to Itta.: Imouto to Kekkon Shita Kataomoi Aite ga Naze Imasara Watashi no Moto ni? to Omottara @COMIC

In place of her sister, Wisteria took on the job of becoming a guardian of a poisonous otherworld. One day, a man who resembled her first love dropped out of the sky. His name was Lloyd. To her surpri...