Nibun no Ichi Fuufu (EP3) "A Night of Betrayal" (Patreon)

Aya found an account that seems to be Kazuma's affair partner and can't stop snooping through the posts. And Kazuma's secret account too? "What did I do wrong?" She is devastated by this thought, but in an effort to salvage the crumbling trust in their relationship, she proposes to Kazuma that they start conceiving. Then, Aya and Kazuma decide to try the rhythm method. "Maybe having a baby will change something..." Aya clings to the faint hope, but more despair strikes...!