شخصية
Male · العمر غير معروف
An ally and classmate who meets [Jousuke](https://anilist.co/character/13085/Higashikata-Jousuke) when [Joutarou](https://anilist.co/character/4003/Kuujou-Joutarou) is searching for him, resulting in the two becoming quick friends. His stand is Echoes, which has three distinct forms, or Acts (Koichi can only call upon one at any given time).
JoJo's Bizarre Adventure: Diamond is Unbreakable
Thus Spoke Rohan Kishibe
JoJo's Bizarre Adventure Part 4: Diamond is Unbreakable
JoJo's Bizarre Adventure Part 5: Golden Wind
Rohan at the Louvre
The Book: JoJo's Bizarre Adventure 4th Another Day
Thus Spoke Rohan Kishibe Episode #06: Poaching Seashore
JoJo's Bizarre Adventure: Golden Wind
Thus Spoke Rohan Kishibe
Echoes ACT50
