Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
~中 ~ちゅう in (the middle of), within, during, whilejlpt5
さん (num) threejlpt5, mix
火口 ひぐち hořákleda1
人口 じんこう populationjlpt4, leda1
~人 ~にん ~person, counter for peoplecounter, jlpt5