[Sanbun kyoden, Umu Rahi] Apron no haha (Mother's Apron)

A hardworking mother beloved at the neighborhood supermarket treasures the apron her two sons gift her, smiling wide at the little appliqué they decorated it with. But when she starts missing dinner and young Koji discovers a filmed performance starring a woman with his mother's heavy breasts and curvy figure wearing that very same apron, his innocent hope that it's merely a lookalike collapses — she quit her job for more time with her lover, degrading herself on camera while her sons piece together the truth. What follows is a slow-burn netorare spiral of a family idol watching their devoted mom unravel into shameless, gasping bliss, murmuring about her sons' happiness even as tears and laughter spill out.