Tome of Troubled Times - Chapter 37: Inspiring Awe in Beimang

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

Reborn as a sword, he lived for hundreds of years, and then he occupied the body of a 15-year-old prince.

Two women visits Dong Fang Ao’s home. Both women claim to be his betrothed. The first woman wants to break off their betrothal but she lost the betrothal gift. The second woman is holding the betrothal gift and demands Dong Fang Ao to marry her.

Dong Fang Ao keeps both women as guests in his home to find out who is his real betrothed. He is curious about the secretive Cao Zi Yun. If she is his real betrothed then he wants to keep her by his side forever. But her secret is capable of separating them forever.