ข้อมูลอนิเมะJoJo's Bizarre Adventure: Diamond is Unbreakable

April 1999. Jotaro Kujo arrives to Morioh City in search of someone named Higashikata, and ends up running into a young man surrounded by delinquents. Jotaro then finds out that his name is Josuke Higashikata, and was exactly the person he was looking for.

Josuke spots the terrible and violent villain Angelo's Stand, and tells Jotaro about that incident. Jotaro figures it's a Stand that can somehow enter people, so he warns Josuke to not eat or drink anything until he can get to him. Right when he's told that, Josuke witnesses the Stand go into his mother, and then does the unthinkable.

Angelo's Stand ability was brought forth by the mysterious bow and arrow, and apparently they're also connected to Dio. After defeating Angelo, Jotaro thought that the danger had left the city, and tries to find the whereabouts of the bow and arrow. A few days later, Koichi is walking home with Josuke, and they pass a house that should be empty...

In order to save Koichi, Josuke goes further into the Nijimura household. Suddenly, he's attacked from many tiny beams of light. Josuke manages to dodge the attack, but it hits Okuyasu right in the face. Josuke tells Okuyasu that he'll heal his wounds if he tells him what the identity of his brother's Stand is. Okuyasu says he has no itention of telling him, and Josuke does something surprising...

Josuke and Koichi defeat Keicho. They go further into the Nijimura house, in order to destroy the bow and arrow to make sure there will be no more victims. However, they end up hearing strange noises in the dark room they happen upon. As soon as Josuke tries to jump into the room, a monster-like hand grabs Koichi's leg...

Riding his bike to school, Koichi accidentally runs over a bag that was in the road that had a cat inside. Koichi is instantly overwhelmed by what happend. Then suddenly, a man named Tamami Kobayashi appears. Despite it being an accident, he demands money from Koichi, saying that he'll use it to bury the cat. Koichi can't process what's going on, but Tamami keeps pushing that he can't just leave after what happened. Koichi is filled with guilt, and then suddenly, a giant lock pops out of his chest...

Josuke and Koichi hear from Tamami that a high school student named Hazamada might also be a Stand user, so the two go to the school and investigate. Josuke checks inside Hazamada's locker, and finds a strange wooden doll inside, but nothing else out of the ordinary. However, as Josuke is inspecting the doll, it suddenly turns into Josuke, and attacks him and Koichi...

Koichi is asked out by another student in his grade named Yukako Yamagishi. At first, he couldn't hide his joy from being asked out, but quickly has second thoughts when she suddenly loses her temper with him. The next day, she knitted him a sweater, made him lunch, and did other things for him that makes Koichi start to wonder about her. Yukako obsession worsens, and she does the unthinkable.

Koichi can't handle living in captivity any longer and tries to plan his escape. While talking to Yukako, Koichi finds out that there's a payphone nearby, and has Reverb go find it. He tries to contact Josuke and Okuyasu, but Yukako already figured out what he was planning. Koichi loses hope. Yukako then goes to the phone to order some ingredients but then something unexpected happens...