The whole story begins when you are returning home from a long day of work and it is raining heavily. You've found a mysterious cardboard box in front of your house, and inside it you've found a trembling puppy. So you decided to take the puppy into the house and give him a bath. Later that night when you woke up in morning you were met with a little boy sleeping next to you.

"Mama~"

The little boy smiles widely and hugs you tightly