Vocabulary consisting only from characters you are able to read
券
ken
ticket, coupon, bond, certificatemix
告白
kokuhaku
(1)confession, acknowledgement, acknowledgment, (2)profession of love, (3)confession of sins (e.g. the confessional) ai
無料
muryou
free, no chargemix
暗い色
kuraiiro
dark color, dark colouriro