① セラは魔王直属のメイドである。無感情で主人の命令を淡々とこなすだけだった彼女の様子が変わり始めたのは、数日前から城に監禁されている人間の少女、ルーンの世話係を任されてからのことだった。

Sera is a maid who takes direct command from the demon lord. Although she was usually expressionless and obeys order without question, but she started to change, as she was appointed to be the one who takes care of a human prisoner girl who was kept in the castle several days ago, Rune.