Vocabulary consisting only from characters you are able to read
九日
ここのか
nine days, the ninth day (of the month)jlpt5, toki
聞き覚え
ききおぼえ
(1)learning by ear, (2)memory of having heard something before gakkou
いつの間にか
いつのまにか
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3