Rainbow Ring of People

Chimata Tenkyuu's Spell Card. She deploys a rainbow ring of people in this attack... but what exactly is a rainbow ring of people? This attack can apparently be dodged by skilfully circling around it, but you have to be careful not to get hit by the bullets appearing from out of nowhere that can catch you unawares.

The perception of how many colors there are in a rainbow changes depending on the country and the historical period. Rainbows are sometimes considered to have five main colors or six and, at other times, eight. There is even an example of it being two. In Japan, it is theorized that the general consensus of the rainbow having seven main colors was adopted during the early years of the Meiji era (1868-1912) due to the influence of America and Europe. And the first person to propose this number was a greatly renowned scientist. It is interesting how there can be such differences in perception even though the colors of the rainbow never change.