SPRD-674 - My wife's bra is loose, and her nipples keep popping out

A couple sets up a pool for their visiting nephew, but the husband is stressed. His slender wife, Yuki, wears bras and swimsuits that are clearly too loose, constantly exposing her nipples. As he worries about others seeing her, opportunistic men notice her wardrobe malfunction and start plotting to get a glimpse of her assets.