A Letter from the Past, Part 2 (Chapter)

The Vow to the Father is the seventh chapter of the JoJo's Bizarre Adventure manga.

Summary
Back seven years, Dio is trying to give his father some medicine but instead his father hits him and would rather drink booze than take medicine. Dario also wanted Dio to sell his mother's dress saying he doesn't need some "dead bitch's stuff". The causes Dio to cry and make him decide that his father will indeed go to hell. So, Dio, wearing a mask, goes to a Chinatown area to get some Oriental poison from a man named Wangchan.

Back to the present, Jonathan understand that Dio killed his own father and is trying yo use the same poison to kill his father. Dio, of course, denies this claim but Jonathan says that he plans to investigate the medicine to see if it's legit. Dio tries to make Jonathan return the medicine to the tray but he refuses. However, Jonathan says that if Dio swears his innocence and on his father's honor, he will return the medicine and never speak of it again. However, Dio refuses and says a piece of shit like his father had no honor at all. This speaking of his father causes Dio to hit Jonathan. However, the years have past and Jonathan is much stronger now. Jonathan grabs hold of Dio and throws him down from the second story, where they're at, to the first. Jonathan knows that they never had friendship and says he'll make sure to get the medicine analyzed and send Dio to tell. Dio knows it will take Jonathan at least three days to find proof of the poison and says that he'll have to finish off Jonathan in three days.