Younger Sister
Little Sister
マイ
いもうと
姉 (シ、お, あね, ねえ) Older Sister, Big Sister, Elder Sister
妹 (マイ、いもうと) Younger Sister, Little Sister
未 (ミ、ま, いま, ひつじ) Not Yet
味 (ミ、あじ) Flavor, Taste
魅 (ミ) Alluring
A Younger Sister 妹 isn't yet 未 a woman 女