Chapter 286

Koichi Hirose (Echoes) (3), originally Atlantic Heights in the WSJ release, is the two hundred eighty-sixth chapter of the JoJo's Bizarre Adventure manga. It is also the twenty-first chapter of Diamond Is Unbreakable.

Summary
Around 4:07 PM, Koichi comes back home, kicking his dog Police to check if its alive. He spots unfamiliar shoes and a someone talking with his mother, when he looks into the family room, he sees with shock that Tamami is massaging his mother's shoulder and chatting with her. Screaming at Tamami what he is doing here, Koichi is presented the 7,000 yen Tamami stole from him and is now pretending to return. Tamami adds that when Koichi bumped into him with his bicycle, they exchanged their wallet, and Tamami claims that his contained over 500,000 yen. Tamami adds weight to his accusation by commenting that Koichi's wallet contains a bill from a dinner he had recently, and the bill is indeed in the wallet. The thug then asks Koichi's mother if she doesn't feel guilty for raising such a son, and despite Koichi's protest, The Lock appears on her chest. Koichi then tries to hit Tamami, but misses; Tamami tells him that he won't be satisfied with 500,000 yen alone and may also take the house's mortgage, pushing Koichi to try to call Josuke. However Tamami doesn't let him, and then Koichi's sister appears with The Lock on her heart too. Tamami explains that she spilled some tea over him earlier, enabling him to exploit her guilt, and considers taking advantage of her. This enrages Koichi who pushes her mother and sister out of the room and summons his Stand, which hatches.