How is 99th Punch: The Time is Now and 99th Punch Heat Up
both simultaneously correct? Please fix chapters not in tankōbon format to match wikipedia's entry
I believe this is the case because the volume releases chapter numbering is different from the online releases chapter numbering, because the volume splits multiple single chapters into 2 chapters. Like Chapter 89 being split into "Hot Pot" and "Cabbage Finished", or Chapter 94 being split into "Kick it" and "The Decision Is?".
So Chapter 99 being "The Time Is Now" is the volume releases numbering and Chapter 99 being "Heat Up" is the online releases numbering, as is with the rest of the chapters listed in the "not yet in tankoubon format" section.