Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
四つ yottsu fourjlpt5
~月 ~gatsu month (of the year)jlpt5, toki
忍び shinobi (1)stealth, (2)(abbr) travelling incognito (traveling), (3)(abbr) ninjutsu, (4)(abbr) ninja, (5)sneak theft, sneak thief, (6)tolerance mix
~か月 ~kagetsu month(s) (time interval)jlpt5, toki
koe voicejlpt5