September 25, 1890: San Diego Beach (1890年9月25日 サンディエゴビーチ,Issen Happyaku Kyūjū Nen Kugatsu Nijūgonichi San Diego Bīchi) is the first volume of Steel Ball Run and the eighty-first volume of the JoJo's Bizarre Adventure manga. It covers the San Diego Beach story arc.
In substance, I drew Steel Ball Run as the seventh part of the JoJo's Bizarre Adventure saga. However for the readers who might begin with this volume, I preferred not to insist too much on that affiliation. On the other hand, completely burying one's past work in order to create a brand new one is, in my opinion, a bad habit for any manga author. It's important to find a theme which carries on from the past. (To be continued in SBR Volume 2.)