Tall, beautiful wife who was NTR'd by her mother's volleyball team coach - Sayuri Hayama (JYMA-114)

I've been retired for two years since getting married. My husband is frequently away on business trips, leading to a lack of communication and a strained relationship as we don't have children. Today, he's going on another long business trip. My supervisor suddenly visits, perhaps knowing or not that he's about to leave again. Feeling he hasn't been fully committed to training lately, the supervisor hopes to change his mindset through training. The two, who have only had sex once before, gradually progress from close guidance to sex coaching... and even invite the coach to join them in a threesome!