I raised my eyebrows upon reading this challenge. Really? Just "someone"? Tough, this is tough.
I'll just pick someone at random, then.
I wish I could meet Adachi Mitsuru.
I want to observe him create an illustration or a manga. I want to discuss his preference in telling a story. I want to learn a lot from him, and of course, I'd like to yell at him several times for creating that kind of ending for the manga Q and A.