Oops, My Sweetheart Is a Cold, Sullen and Domineering Boss.

[Boss boss + childhood sweetheart + reunion after a long absence + two-way secret love + sinister + cold + double clean + yandere] A soft-faced and sly-hearted designer VS a harsh-looking CEO with a soft heart When she was young, she was slow in the face of love. He didn't know how to express himself due to the lack of love in his native family, so he missed it due to a misunderstanding. As adults, the two reunited again. She was gentle and tolerant of his insecurities and paranoia. He was secretly worried that she would leave again. The two continue to grow and heal, and finally understand how to love.