His mother's best friend is bound to be just an old lady. Takaaki's preconceived notion is shattered by his mother's best friend, Hikaru. With a beautiful face and voluptuous breasts that are visible even through her clothes, Hikaru has a body that Takaaki likes in every way, and he wants to get closer to her, but his lack of ability to talk prevents him from making a good conversation. In a panic, Takaaki resorts to the outrageous step of stealing her panties to use as masturbation material, but unfortunately, he is found out. But instead of getting angry, Hikaru gently kisses him...