Miki, a 32-year-old housewife, lived a mundane but peaceful life. Her husband worked late, and their conversations had dwindled long ago. One day, her fellow mom-friend Reika said with a mischievous smile, "Why not blow off some steam for once? I won't tell a soul."

She was dragged, half-against her will, to a dining bar on the edge of town. However, waiting there were not men of their own age, but dazzlingly young college students.

"Wait... I didn't hear anything about this," Miki stammered.

Despite her confusion, their friendly smiles and unpretentious conversation eventually melted her tension. Laughter that bridged the age gap echoed through the night, and time flew by surprisingly fast.

When the last trains were gone and everyone began considering their way home, an unexpected turn of events led Miki to stay at a hotel with two of the college students.

The next morning, as she stared at the sunlight streaming through the window, Miki had no way of knowing that the choice she made last night would be the beginning of a massive upheaval in her peaceful daily life.