Koichi Hirose (広瀬 康一, Hirose Kōichi) was confirmed to return for All-Star Battle R during the game's initial announcement trailer.[1]
His moveset is fundamentally the same as his from All-Star Battle, with a few tweaks being made to both balance the character and fit him into the overall gameplay tweaks that All-Star Battle R brought.
In the English localization of the game, Koichi's Stand, Echoes, is localized as "Reverb", carried on from its All-Star Battle debut.
Replacing Koichi's previous voice actor, Romi Park, is Yuki Kaji, who has voiced him since the Diamond is Unbreakable anime adaptation. Because of this, and like the majority of the game's roster, voicelines for Koichi were either added or re-recorded.
Koichi has 900 health and uses the Stand (スタンド, Sutando) Battle Style, fighting foes with Echoes. During a fight, he can use various moves from his appearance in Diamond is Unbreakable.
The player's health is decreased. The opponent's health continuously refills.
Secret Missions
1. Down your opponent: 1000 G 2. Land a Stylish Evade: Iggy Publicity Artwork 3. Land the "A 'nasty' habit" skill: Iggy's Theme 4. Win with a Great Heat Attack: Iggy Special Outfit A
Entrance Dialogue
Koichi: That's a Stand! Are you telling me a dog can be a Stand user?! Iggy: I'm on walkies, so get lost or I'll rip your leg off!
Victory Dialogue
Iggy: I can tell you're a dog lover, so I went easy on you.
Defeat Dialogue
Koichi: Wow, that was quite a shock! Maybe Police will develop a Stand next?
An ally from Part 4: Diamond is Unbreakable, he is Stand User of Echoes, and one of Josuke Higashikata's classmates. Timid and unreliable at first, he slowly earns the trust of his friends, and even some enemy Stand Users. Although initially annoyed at Yukako Yamagishi's affections for him, he eventually reciprocates them.
Koichi Hirose's Stand. At first, it appears in the form of an egg, but after fighting with Tamami Kobayashi, it breaks its shell to be born.[3] Echoes evolves with Koichi, initially taking an insectoid form and gradually becoming more human. ACT1 and ACT2's skills are sound-based, while ACT3 has the ability to make matter heavier, and the different ACTs can therefore be used depending on the situation.
The cliffside where Koichi and Yukako fought. It became due to the urban legend about a young woman who attempted suicide by jumping off the cliffside, only to bounced gently along the rocks below with a boing. Located in the northeastern part of Morioh.