Vocabulary consisting only from characters you are able to read
手がかり
tegakari
(1)clue, key, trail, scent, track, contact, (2)handhold, on hand mix
人
hito
man, person, human being, mankindhito, jlpt5
二人
futari
two persons, two people, pair, couplejlpt5
白黒
širokuro
(1)black and white, monochrome, (exp,vs) (2)good and evil, right and wrong, guilt and innocence iro
水力
suirjoku
hydraulic power, water powermix
八日
jouka
eight days, the eighth (day of the month)jlpt5, toki