[Asagi Ryuu] Onee-san ga Iyashite Ageru Ch. 1-2 [biribiri]

Ayumi's life takes a scandalous detour when she encounters a stunning, voluptuous older woman who eagerly welcomes the younger man's advances—topping him with her bountiful breasts, finishing inside, and teasingly asking, "Can I call you 'darling'?" As the affair deepens through steamy trysts and whispered confessions of mutual love, Ayumi's boyfriend Tomoka remains oblivious to her betrayal, even urging her to see "the dolphin show one more time." Domestic bliss with Tomoka and his sweet mother Ayumi-san clashes against the forbidden trysts, where Ayumi succumbs to the older woman's tender seduction—"A parent's heart and a woman's heart"—leaving her torn between two very different desires. The dramatic finale sees Ayumi confronted in the kitchen as the truth threatens to unravel everything.