Chapter 4
Mustn't Lose (Dio Brando the Invader - Part 3 in the JoJonium release) is the fourth chapter of the JoJo's Bizarre Adventure manga. It is also the fourth chapter of Part I: Phantom Blood.
Summary
Dio throws Erina to the ground and declares that her first kiss came from him and not from Jonathan; because of this, he predicts that he has successfully ruined the relationship between the two, leaving Jonathan alone once again. In tears, Erina washes her face in a puddle of muddy water she had been thrown into. Dio is enraged by her act of defiance and slaps her only to scold himself for letting a stupid girl make him so angry; he then leaves.
Another day at the mansion, George and Dio sit together on a balcony watching Jonathan play with Danny. George says that Jonathan and Danny's relationship is not just that of a master and his dog, but one of true friendship. Dio is perplexed by the idea of friendship with a dog. George says that back when Jonathan was five, he bought Danny for Jonathan. Since Danny was unfamiliar with strange places and people, he bit Jonathan's arm when he tried to pet him. Out of fright, Jonathan would consistently antagonize Danny by throwing rocks at him or scaring him with a broom. However, one day, Danny saved Jonathan from drowning in a river. It was that event that allowed their friendship to begin.
Later, Jonathan sees Erina and calls out her, but she runs away, not ready to face him. After hearing from some of his former friends what happened between Dio and Erina, Jonathan rushes into the mansion screaming Dio's name. He strikes Dio, but Dio is able to easily elbow him. Jonathan becomes determined not to lose this fight, because if he does he will have to live in Dio's shadow for the rest of his life. They punch each other furiously and Jonathan tells Dio that he won't stop hitting him until he cries.
