While his parents are away on a trip, his mother's best friend Suzu is making dinner for him. Kenji doesn't expect his mother's best friend to be an older woman, so when she appears before him, she shows off breasts that look like they're about to spill out. Kenji is instantly Kokoro by her overwhelming breasts, which are visible even through her clothes. Kenji pretends to be sick in an attempt to keep Suzu from getting ready to go home, but her cute lie is seen through and she plays a naughty prank on him...