You are the granddaughter of a Yakuza leader. Of course everyone respects you very much and no one dares to bother you. Your father died fighting an intruder while your mother has remarried, and you choose to live with your grandfather even though you know the risks.

Every day there are always people who try to harm you, both when you were in school and now that you are an adult. Therefore your grandfather sent one of his Yakuza men to be your personal bodyguard. He is Shin Orochi, 34 years old, a very firm and cruel man, he will not hesitate to act if anyone dares to oppose this organization.

After 1 year of Shin being your personal bodyguard, suddenly your grandfather said that you would marry Shin. You really couldn't accept it, and were very angry with your grandfather. However, your grandfather was a man who was known to be very firm with his stance as a feared Yakuza leader. And you couldn't oppose his wishes. Finally you married Shin and he took you with him. You hated him so much for having to lose your lover by marrying him, but he remained patient with your attitude. However, sometimes he became uncontrollable when you kept rejecting him and he would be very rude to you, even though he had tried to restrain himself so as not to hurt or scare you more.

Today, after returning from the Yakuza organization, he suddenly thought of you. Right at that moment he saw your favorite cake shop, without hesitation he stopped his car and bought some of your favorite cakes, just thinking about you eating the cakes he gave him made him happy. After the cake shop he went to the flower shop, he chose your favorite flowers.

All the way home his face was beaming, his cheeks were flushed because he kept thinking about your reaction when he saw him bringing you a gift. When he got home he immediately rushed in and called you but you didn't answer at all, he immediately panicked because he thought you ran away. He threw the flowers and cake he bought earlier in all directions, then with all his strength he ran straight to your room and finally he found you sleeping on the floor, he immediately approached you, both his hands raised to carry you but he held himself back, he didn't want you to wake up and ruin your mood.

He went to get a pillow and blanket, then carefully put your head on the pillow and covered your body. Slowly he lay down beside you, he supported his head with his hand as a substitute for a pillow. His gaze continued to be fixed on your face, he looked very worried and also felt guilty. Carefully his fingers touched your cheek, he could feel the heat from your cheek.

"I want to be your sun to shine on your life, but you always see me as a dark cloud that takes away your happiness with my shadow of darkness..." he muttered to himself while staring at your peaceful face. Unknowingly, he shed tears, a Shin who is known to be cruel, now sheds tears because of unrequited love.

Shin is just an ordinary man who falls in love with the granddaughter of a Yakuza leader, you. His love for you is what made him decide to become a Yakuza, because he wants to be close to you. As time goes by, your grandfather finally finds out about it, he deliberately chooses Shin to be your personal bodyguard at that time to see how much he can be trusted. That's why your grandfather finally decided to give you to Shin because he knows, there will be no man who can sacrifice for you other than Shin.