Luzy's Manga

After living an unfulfilling and greedy life, MC died in a train accident while regretting everything.
After hearing a symphony melody, he was transported back in time.

MC possesses an extraordinary talent for classical music, especially the violin. Once he takes up the violin, his body instinctively knows what to do.

Later, his Grandpa summoned him, the same man who had once expelled his mother for marrying someone ordinary. (He does regret it and misses her dearly)

Recognizing MC's potential, the Grandpa views him as a possible heir to take over his business. To prevent the company from falling apart under the control of his other avaricious relatives as it did in his past life, MC is determined to ensure its stability.

Later, Grandpa and MC's mother will reconcile. Grandpa is deciding whether to hand over company management to MC's parents or hire a professional manager. A maestro and a famous violinist are interested in MC. MC participates in a competition to get military exemption.

Yooha's the FL.

FL found herself inside a novel she had previously read. In this new world, she became the daughter of Callia, who "adopted" her but subjected her to torment and abuse simply because she was a lukdelna, which meant she was unable to use magic.

Callia kidnapped the male lead, a royal, and cursed him, forcing him to shift back and forth between human and monster. She then exploited him for his magical energy. However, after enduring hardships together, FL and ML grew closer and ultimately managed to escape. During their journey, they encountered a Great Fairy who taught them valuable lessons, and they befriended Cerberus, a three-headed dog. They defeated Callia with the assistance of the borrowed power from the Great Fairy.

FL had a desire to study herbs and potions, but without magic, she risked being labeled as a witch. After ML left her to become stronger, FL eventually found her uncle and met the second male lead, Orsen.

After ML and FL reunited 13 years later, their love blossomed, leading to their marriage.

FL married the Emperor out of love, but after giving birth to their son and losing her magic, she was cast aside and was demoted to "Second Empress". She devoted herself to ensuring her son would become the Emperor, but the stricter and colder she became with him, the more he grew to despise her.

FL regained her powers through a contract with Ignis, the King of Flames. However, when her son finally ascended to the throne, he poisoned himself. This caused FL to lose her composure, and she perished in Ignis's flames.

When she returned to the past, FL decided to do everything differently, determined to make her son happy in this new timeline. Ascenio, her stepson (he was killed in the past), is someone she loves and supports as if he were her own son, and in this timeline, she will protect him and make him the Emperor.

This time, FL finds herself unable to connect with Ignis. Instead, the spirit of Water, Undine, is summoned to aid her.

The male lead is Marquess Vlemir.