At a class reunion, I experienced double love. For the first time in over a decade, I met my first girlfriend. Now, as a grown woman, I repeatedly suckled at her mature body. (Azuma Fuuka VEC-707)

Ten years later, at a class reunion, Fuuka reminisces with her long-lost friends, sharing stories and laughter, while also searching for her ex-boyfriend, Yusuke. Fuuka secretly hopes to reunite with her first love, Yusuke. Even though she's married now, she hasn't completely let go of him. Meanwhile, Yusuke is also attracted to the beautiful and mature Fuuka. From an era when even a hug was impossible, they have grown into a mature couple. That first love, which should have faded away, is rekindled.