The Middle Ages in Europe weren't gloomy.

 At least I don't think it was as gloomy as Rome. Rome was a society where only some vested Roman citizens lived well. Only some rich Roman men had control of the suffrage.  Many of the rest of the allies and slaves suffered from school administration without rights. Nanami Shiono describes Rome as a shining society, but Rome was actually a society that could do nothing without corrupt connections. Rome is a society of corruption and war in which gladiators are driven to death, slaves are slaughtered for fun, and 10 million slaves are traded a year. In any society, slaves could have been liberated, but Siono distorts it as if only Rome was possible. However, the European Middle Ages, built by beating Rome under the banner of chivalry and Catholicism, was a society where at least serfs could be brought to formal trial and gladiators did not exist. Unlike slaves, serfs can make wealth, marry, and not be sold. Rome, where the labor market was extremely flexible, and Europe's Middle Ages, which only worked during the sunrise, are very different (different from the industrial revolution, when light bulbs were invented day and night). Later in the European Middle Ages, it is described as a society where there was no science and witch hunting was prevalent. However, in fact, the European Middle Ages knew that the circumference of the Earth was 40,000 km and were able to build stone structures over 100 meters high, and witch hunting was prevalent in the Renaissance. In the European Middle Ages, witch hunts were stipulated and never executed because brides who learned a lot of witch hunts were judged by religious courts. Since the 14th century of the Renaissance, witch-hunting has been prevalent, centering on the brutal Protestants (i.e., dog reading).