[Tsumagomi Izumo] Omoide no Ki no Shita (Aneniku Inmu) [MrBubbles]

On a sweltering summer afternoon, young Shirou trudges home through the oppressive heat only to find his doting older sister waiting in a skimpy apron, her heavy breasts barely contained and a mischievous glint in her eye. What starts as a playful blast from the garden hose quickly spirals—she peels him out of his clothes, presses his face deep into her sweat-slicked chest to nurse him like a baby, then leads him to a special tree where his name is carved into the bark. By the time the sun hangs low, the two are drenched in each other's sweat and already planning to wash each other clean in the bath.