"I'm the emperor, not you, Naraku! I'm Inuyasha's father, Inu no Taisho!"
"In that case, Lord Aizen, there's only one choice for me, Coyote Starrk... I'm outta here~"
"Take this, Muzan! This is the last Breathing Technique of Kyojuro Rengoku: Secret Art, Tenth Form, Sun!"
"G-General Esdeath, please... don't come so close. I'm the emperor..."
"I'm Miko Yotsuya, and I hate evil spirits who think they're gods. Ora~"
"The one who truly makes the Counter Force tremble is my talent, of course, Emiya Norikata. Now, time to stop time!"
"Huh? My turn? Oh, right~ Um... I, Nara Shikage, just want to live a quiet life. Yeah, that's it."
The young man scratched his cheek. Behind him stood a huge pink cat. He spoke from the heart: "Oh, I almost forgot to ask... Do you want to become a Stand user too?"
In short, this is a story about a randomly selected, lucky (un)lucky supporting character who gains a Stand and then changes their fate.