[Naivta (Nishi Yoshiyuki)] Sodate no Uba wa Boku no Mono

A busty young maid insists she is "just his maid" and that her young master "is above me in status," yet the title's promise—that the wet nurse belongs to him—tells a different story. From scrubbing her master's back in a straining swimsuit to secret nighttime self-pleasure while the house sleeps, her composure crumbles as the boy latches onto her enormous breasts "like a baby" and pushes their relationship far past servant and master. What begins as duty spirals into desperate, sweat-soaked coupling—until a car pulling up outside threatens to expose everything she's been trying to hide.