This work unfolds on the same timeline as "Yamasaki Mai (Sister Chapter)." Secrets hidden within the daily lives of a husband and his sister gradually come to light. While pretending to go to her part-time job, the husband actually heads elsewhere every morning. There, Mai waits anxiously for a secret encounter. Men disguised as pets are already there, their cocks rock-hard, eagerly anticipating her arrival. They passionately embrace her, pressing their dicks against her chest and pussy. Filled with raw desire, this two-part story delivers a shocking, intense experience.