Vocabulary consisting only from characters you are able to read
長年
ながねん
long time, many yearstoki
真っ暗
まっくら
(1)total darkness, pitch dark, (2)bleak future, poor prospects mix
告白
こくはく
(1)confession, acknowledgement, acknowledgment, (2)profession of love, (3)confession of sins (e.g. the confessional) ai