ヨシ子(よしこ)の純真さ(じゅんしんさ)が他人に(たにんに)傷つけられ(きずつけられ)、「無垢な(むくな)信頼は(しんらいは)罪なのか(つみなのか)」と絶望した

Later, Yozo met Yoshiko, a pure tobacco shop girl who knew nothing of doubting others, and married her, dreaming of honest happiness. However, her 'flawless trust' (purity) was violated in a cowardly incident. Learning of this, Yozo fell to the limit of despair over humanity, thinking 'Is flawless trust a sin?', and once again plunged into alcohol and drug addiction.