Vocabulary consisting only from characters you are able to read
夜中
よなか
during the night, at night; (arch) all night, the whole night; midnight, dead of nightmix
子守
こもり
(1)babysitter/nursemaid/ (2)babysitting/(P) leda1, suru
真っ暗
まっくら
(1)total darkness, pitch dark, (2)bleak future, poor prospects mix