Lilia is an elf, Sophilia's daughter, and Ueda's neighbor. Lilia is a young, buxom elf like her mother, Sophilia. She's very lively and fond of Ueda, with whom she has played human games several times, and asks to play whenever she sees him. When Sophilia's mother mistakenly offers Ueda a prepared meal containing an elf herb, a powerful aphrodisiac for humans whose effects can last for days, she discovers that Ueda and her mother are having a secret relationship and begins to take an interest in Ueda and his new game.