Help with upload Guidelines question

[Gold_Scale]

Help with my question cause i don't want to break any rule here "Bulk chapters (e.g. Combining 10 chapters into 1)"
The manga in question is this
The Heroes of Galaxy Wars
This manga doesnt have any chapter it's just continues till the end of the volume so the whole volume is 1 chapter. I don't know why the last guys put a chapter in it cause there are no indicator for a chapter anywhere and believe me i search everywhere even the WIKI. So what should i do?, do i just upload the whole volume into 1 or just cut it into pieces like the last guy did?

 

[Valle_reading_manga]

This manga doesnt have any chapter it's just continues till the end of the volume

The chapters you see from the previous uploader are likely based on the initial magazine publication (hopefully). Unfortunately(?), it's quite common with old manga for the volumes not to list the individual chapters included, merging them instead.
Ideally, you want to upload your volumes split accordingly as well, but it's quite hard to obtain this information decades later. You could try looking for "cuts" (typically, there is a sort of ending/opening page), maybe take a look at the chapters already on MD to figure out the rough chapter length or try to get in contact with the previous uploader and ask them if they got a good source...
The JP Wikipedia entry lists the monthly magazines the manga was published in, so if you can obtain those raws (unlikely), you could figure out the chapters as well. That being said, the final chapter number on MD seems weird, 260+ chapters is rather high for a title releasing monthly over ~12 years, so if anyone gets/has the raws, that'd certainly be interesting...