餓死転生 ～奴隷少年は魔物を喰らって覚醒す！～ (Associated Names)

Born as a child of a serf in a world where magic and monsters exist – Reurus had memories of a previous life lived in modern Japan. However, knowledge of previous lives is almost useless in a world where common sense and environment are different from those in previous life. Poor housing, hard work, unsatisfactory…