The Heartthrob Became My Boyfriend - Chapter 251 - 250 Youre Not Worthy Yet

In a world teeming with Titans, Colossals, Gigantic Monsters and Kaiju's, Erian who reincarnated makes his living collecting scraps of low-grade Defective Genetic Serum, realised he transmigrated along with his system.

Follow Erian as he grows to become the strongest Disaster Grade Titan with the help of his Titan System!

Upon meeting the girl who would become her adopted younger sister, the duke’s daughter Christina regained memories of her previous life. Through those memories, she learned that her new sister, Mishuli, was the heroine of a certain story. And though the story depicted a Christina who abused her sister, the real Christina turned into a siscon who spoiled Mishuli to no end.

A young man, with a keen mind of medical knowledge and skill, steps into a vibrant buzzing city for the first time.How would this young man face the challenges of love and hate, of family’s vengeance, and the temptation of beautiful ladies?