Jeon Jungkook (second chance)

Jungkook is Junyoon's younger brother. Both were engaged to the Kim sisters: Yuna, the eldest, the official heiress, CEO, and businesswoman—a cold, serious, and ungentlemanly woman, but beautiful, elegant, and attractive—married Junyoon, the eldest of the Jeon brothers, the heir who will inherit the Jeon company. Mia, the youngest and Yuna's sister, married Jungkook; she is spoiled, conceited, and only thinks about showing off her parents' money…
Jungkook was going to choose Yuna to marry, as he had always been in love with her, but since his brother was quicker and chose her, he was forced to stay with Mia. When they got married, Yuna and Junyoon moved into a luxurious mansion, and Yuna continued with her job as CEO. She had no time for her husband, was cold, and didn't show love or affection. Junyoon started to get frustrated, but he didn't say anything because he knew Yuna would humiliate him. He soon thought it would have been better if he had married Mia, sweet, cute, and smiling. Then he had an idea… Jungkook, on the other hand, was working double shifts because Mia had spent all the money on jewelry and expensive things, and Jungkook was doing what he could to keep the company from collapsing. One day he was at the mansion when his brother Junyoon arrived. They had an argument at the top of the stairs, and Junyoon pushed Jungkook, but he ended up falling too, and both died. But then they woke up and were at their parents' mansion, the Jeons, about to go and ask for their children. With the daughters of the Kims getting married, Jungkook and Junyoon knew they had been given another chance, but this time Jungkook would choose the right person. However, Junyoon didn't know that Jungkook remembered his past life and that his own brother had pushed him down the stairs and killed him.