Vocabulary consisting only from characters you are able to read
いつの間にか
itsunomanika
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3
怖がる
kowagaru
to be afraid of, to fear, to dread, to be nervous (about), to be shy (of)godan, verb, vintrans
数式
suushiki
numerical formulamix
山口県
yamaguchiken
Yamaguchi prefecture (Chuugoku area)namae
気づく
kiduku
to notice/to recognize/to recognise/to become aware of/to perceive/to realize/to realisegodan, verb