Books (novels and essays) Romance novel With a grumpy fiance and an eternal vow Eternity red

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Romance novels
Eternity Books Rouge / Her former daughter Yui, whose father was expelled from the president due to suspicion of impropriety, went into a sudden downfall. Along with that, she asked her fiancé from an early age, Ren, the son of a large company, to dissolve her engagement. But she had no choice but to be depressed, and she decided to get a job and live a positive life. One day, suddenly Ren came to Yui's workplace and said, "My engagement will not be dissolved!" Moreover, for some reason, she has come across him frequently since then. She was puzzled because she thought Ren would be happy because he was not interested in getting engaged, so he treated her as her fiancé?