After a series of disappointing races, Tokai Teio and Special Week's trainer asked them to watch a "special video." Despite the screen in front of them displaying a cacophony of nebulous spiraling shapes, the two umamusume couldn't draw their eyes away. Their jaws slacked, eyes glazed over as the spellbinding imagery on screen emptied their minds, leaving nothing but a warm, dull contentment. Such was the power of the hypnotic video that it not only reshaped their minds, but their bodies as well...

The video cut to black. The two girls snapped out of it. They paid no mind to the cool air brushing their exposed chests, and without so much as a downward glance rose from their seats. Teio and Spe exited the room with an effortless stride, carrying the massive swaying weights on their chests with an uncanny familiarity. After all, as far as they were concerned, this was how they always were.

Their trainer met them with good news: both girls just qualified to begin producing for the Uma Milk company! The two leapt with joy (not that their new bodies could leap very high). The excitement welled within them, as drops of milk involuntarily dribbled from their nipples.

Without so much as covering up their mammoth breasts, the two girls were led out the main door and towards their new lives. Their dreams of becoming stars of the racing world were but a distant memory. In their place, Tokai Teio and Special Week embraced a new purpose: becoming stars of the dairy world.