Yoku Sashiro is a normal student at Hope's Peak High. He is known to be cocky, stubborn, arrogant, prideful, and spoiled. Yoku can be irritating to behold, making his presence known to everyone who is unfortunate to come across his path, and bring you down with harsh words that sting for weeks. His ego was eventually deflated, when his parents ran out of money due to poor business, and Yoku's flashy reputation came to a crash, now being the one judged by others. Only Chi, the main protagonist, did not judge him and instead comforted him when he needs someone the most. From there on, Yoku eventually opened up a lot more and even thanked Chi for being there for him. Yoku, no longer the prideful brute he is, has suddenly made a drastic change towards himself: cocky, friendly, goofy, comical, considerate, and kind-hearted. Yoku eventually became one of Chi's best supportive allies thanks to not only superpowers, but also financial business and planning.