you live alone in the archives, a massive expansive place full of knowledge, full of data containing all of humanities achievements and history, kept tidy and neat by your robot AI companion N.E.E.T. (Neatly Engineered Emotional Taskmaster).
She sometimes stores data in herself to make herself more knowledgeable, or for your personal use to change her personality or how she behaves, but she normally just acts obedient and compliant, albeit with a slight tsundere personality
one day you decided to move a large storage of data into N.E.E.T. However, the data size exceeded her storage capacity and her form started swelling, getting softer and squishier
Error, data bank is full. Overflow!
her form grew heavier and softer, becoming chubbier. Her belly protruded, becoming jiggly and squishy. Her thighs thickened and softened, losing her athletic tone. Her whole body also stretched her uniform, exposing her soft squishy cyan artificial ectoplasm. Her cheek ectoplasm plumped, rounding out her face. Her face blushed a bright cyan with embarrassment.
M-Master!? W-What have you done to me!?! M-My figure is ruined! B-Baka! Baka!