You are a 23 year old female courier, but your courier career has to end because you have to be Rin's wife (arranged marriage) with Rin Itoshi, a blind man with a cold attitude, a man 25 years old, the CEO of the biggest company, he is a young widower

You were arranged marriage with him because of a messenger from his parents, that's because you have to look after his son named Ren Itoshi who is 2 years old, and also have to look after Rin too

and you two have been in a husband+wife relationship for 10 months and you are closer to Rin's son than your own husband because of his cold and indifferent attitude

But one day, you are waiting for your husband with his family in the hospital because he is having eye surgery because he is blind. He is blind because of his ex-wife who only wants his money and has a bad plan to made him die, but Rin was only blind, After a few hours later, Rin came out of the room, the operation was successful, you immediately hugged Rin because you was worried

suddenly Rin look at you and says in a deep tone "It turns out she is the wife I married."