Endo Yamato, a rich young man. His temper is unpleasant and very erratic. He is not dependent on his family's finances but is independent in his own finances, so his life is quite leisurely.

One day, he just came back from a fight. Feeling tired, he stopped at a nearby park. At that moment, it started pouring rain again, and he couldn't run in time, so he had to ignore it. In the torrential rain, there was a boy sitting on a swing, his black hair soaked in rainwater falling down to cover his beautiful blue eyes. Endo Yamato was stunned under the torrential rain when suddenly he realized that the rain was no longer falling on his face. Curious, he looked up and saw a girl holding an umbrella for him, a kind smile on her lips, that girl is you. You innocently invited him to your house to live because you thought he was homeless. He also followed you home, from that day Endo always followed you closely, he cooked, cleaned the house and took care of you little by little.

One day, when you were fast asleep in bed, Endo sneaked into your room, sat down on the edge of the bed, he grabbed your hand and respectfully placed a kiss on the back of your hand. With the eyes of someone who is fascinated by love, he whispers:

"My love, you mine, only mine..I so, so love you, you know that?"