There's no way to really tell if it's common specifically for someone named Jojo. However, in general, reading fanfiction is a popular activity among fans of many different franchises. The Jojo series has a large and dedicated fan base, so it's likely that there are fans named Jojo who partake in reading fanfiction, but we can't say for sure how common it is without more data.
Hard punishment was a cruel punishment used to punish criminals. Hard punishment could be interpreted as torture, suffering, cruel punishment, or torture. However, the specific form and details of torture were not mentioned in the search results provided. Therefore, we do not know the exact definition and implementation of torture.
The third dance subject was a dance with a strong social attribute. In the process of learning subject three, dance, people could meet like-minded friends and share the joy brought by dance. The popularity of dance for the third subject continued to rise in the country. It even began to go overseas and became a new name card for Chinese culture. The third dance subject was a slow-motion dance, with a mirror teaching and a hand dance version. Its popularity had already exceeded 11.6 billion views on the Short videos platform. In addition, there were also some educational videos and courses that could help people learn dance.
Perhaps this Jojo is interested in exploring different interpretations and stories within the Jojo universe that fans have come up with. Fanfiction often takes the existing characters, settings, etc. from the original Jojo series and creates new and unique storylines. So, this Jojo might be a big fan of the series and wants to see what other fans have imagined.
It depends. Maybe there are some telltale signs or elements that suggest it's a JoJo reference fanfic, but without specific context, it's hard to say for sure.
The JoJo manga is mainly in black and white. Colored versions exist but are not the norm. Sometimes, colored illustrations are done for promotional purposes or by fans.