JoJo's Bizarre Adventure: Diamond Is Unbreakable Episode 6: Koichi Hirose (Reverb)

Manga chapter 24-28

Canon/MED

Oshimeter

9.3

3 Ratings

5★

4★

3★

2★

1★

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EPISODE REVIEWS

Koichi's evolution

Koichi getting his own Stand is a big moment and Echoes Act 1: Reverb is quirky and the stand abilities are underrated. The Tamami encounter is goofy but it sets up how Koichi will grow throughout the whole season. Love to see it. <3

Episode Context

Koichi Hirose steps out of Josuke's shadow and into the spotlight. Episode 6 shifts focus to the unassuming high schooler as he faces a new threat that weaponizes guilt and psychological pressure rather than brute force. The tone leans heavily into suspense and mind games, a departure from the more straightforward action of the Nijimura Brothers arc. Expect a slower, more character-driven pace as Koichi is forced to confront his own insecurities under genuinely threatening circumstances. New Stand abilities make their debut here, and the episode does strong work establishing Koichi as more than a sidekick, his growth under pressure is the real centerpiece. David Production maintains Part 4's signature balance of small-town unease and bizarre supernatural escalation, keeping Morioh feeling both mundane and deeply dangerous.

Runtime23 min

Filler StatusCanon

Plot ImportanceMED

Air DateMay 7, 2016

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