Undercurrent Under Pure White

"Sister, can you give me something to eat?" In the alleyway on a rainy night, the handsome boy was soaked like an abandoned puppy. The flower shop owner Su Jin felt relieved and handed over the remaining buns. "Sister, I'm cold." At the door of the house, he came back again and again, his clear eyes looking at her with nowhere to escape. She was so soft-hearted that she took him in for one night. "Sister, you smell so good." "Sister, how do you pronounce this word?" "Sister, don't let me go..." He was purely dependent and never left her, suddenly adding a sweet burden to her life. She taught him how to read, protected him, and sympathized with his past. Until late one night, she accidentally woke up. Behind the ajar door, his low voice came, cold and unfamiliar, saying to the other end of the phone: "The plan remains as usual. Don't let her notice anything until I get back." The phone hangs up. He turned around and met her shocked eyes. At that moment, his eyes were panicked for a moment, and then turned into a depth that she couldn't understand. He spoke softly, but his tone was completely changed: "Sister... You heard everything?"