Vocabulary consisting only from characters you are able to read
少しずつ
sukoshizutsu
little by littlemix
五日
itsuka
five days, the fifth day (of the month)jlpt5, toki
保存
hozon
preservation, conservation, storage, saving (e.g. to disk), maintenancejlpt3, suru
火力
karyoku
heating power, steam powermix
今上
kinjou
(sens) the reigning emperorseiji