The Incredible Shrinking

The year is 1957. Usagi and Mamoru are living peacefully in their home along with their 8-year-old pink-haired daughter, Chibiusa. One day while out for a walk, Mamoru gets covered in a mysterious purple mist. At first nothing seems to happen, but a few days later, Mamoru wakes up shorter than even his own wife, which definitely raises eyebrows. Doctors can't seem to figure out what's causing Mamoru's shrinking, especially without a sample of the mist that started the whole mess. As the days go on, Mamoru shrinks smaller and smaller to the point where he has to live in Chibiusa's dollhouse to avoid anything bad happening to him. As the frustration builds within Mamoru and he continues to shrink, will he and Usagi still be in love with each other?