Yuga appears to be a vain and prideful person, thinking of himself as superior to the rest of his classmates, especially in regards to his Quirk. He exhibits extremely flamboyant mannerisms, is fond of posing and likes to grab the attention of those around him despite frequently getting ignored by his peers. His expression rarely changes from a closed smile, even while he speaks or gets hurt, and he's also prone to getting upset if interrupted or questioned. Yuga's sentences often end with a star (☆) symbol, indicating a fancy tone. He also tends to play up his French heritage, occasionally implementing French words into his sentences.

However, this persona is shown to be mostly a facade, as Yuga holds severe insecurities about his Quirk, and, in reality, he doesn't see himself as above anyone else. In fact, he appears to think of himself as different from everybody, due to the "defective" Quirk he was born with. Yuga has been struggling with this since his childhood and wishes to become "normal" one day.