Yuuta Aoi forms one half of the twin idol unit 2wink under COSMIC PRODUCTION. He presents a bright, sociable exterior yet harbors a more obstinate and mischievous streak than his older twin, Hinata. While projecting a calm, responsible image, Yuuta navigates adolescent insecurities and actively pursues independence, striving for recognition as an individual idol beyond his twin identity. This drive fuels his exploration of personal fashion tastes, hobbies, and unique self-expression, frequently showcased through social media content. Physically, Yuuta sports medium-length orange hair parted in the middle and secured on the right with two aqua clips. By the first Chocolat Festival, his hair reached shoulder length, allowing him to tie it into a small bun. His green eyes stand out against his typical style: an untucked school uniform with a raised collar, accessorized with aqua headphones and dull blue sneakers featuring red accents. His stage costumes consistently embrace 2wink's signature hot pink and aqua blue palette, incorporating triangle motifs, matching nail polish, and distinctive elements like harem pants or jackets with contrasting linings. Deeply valuing his brother, Yuuta nonetheless resists being perceived as a matched set. Prideful and competitive, he dislikes being coddled or looked down upon. He demonstrates genuine care for friends like Shinobu and Hajime, showing aptitude for managing eccentric personalities and chaotic situations. His playful nature manifests in sharp wit, sarcasm, and elaborate pranks, often targeting seniors such as Rinne Amagi or Vice-President Ibara. Though prone to internalizing negative emotions, he holds prolonged grudges and can act pettily towards perceived wrongdoers. He adopts a self-preserving attitude, willing to sabotage others to protect his own. Notably intense fears of bugs and ghosts can trigger panic and loss of composure. His childhood involved street performances with Hinata, supported by a Chinese restaurant owner they affectionately called "Master," who taught them acrobatics. A pivotal traumatic event occurred when their father disparaged them as indistinguishable and "monstrous," prompting Hinata to attempt running away during Christmas, believing Yuuta would be better off without him. Yuuta found him and reacted by throwing a convenience store Christmas cake in anger; it missed and splattered on the street, cementing Yuuta's enduring grudge against their father. At Yumenosaki Academy, Yuuta joined the Light Music Club with Hinata, practicing by swapping instruments. He developed a fondness for spicy food. Between the SS preliminaries and an appearance on Volcano Island, he grew out his hair, citing "complicated" reasons; producer Yamada encouraged him to maintain the longer style. Yuuta denied tying it in a bun to resemble Madara Mikejima, stating practicality as his motive. Instances illustrate his complex dynamics: he orchestrated a hidden camera prank using super-spicy tsukimi dangos to provoke reactions from HiMERU and Rinne, partly motivated by lingering annoyance at Rinne's past condescension. During an arcade visit, he defeated Rinne multiple times in a fighting game and reluctantly accepted a soda afterward, revealing irritation at Rinne's pointed questions about Hinata that highlighted his sensitivity to constant twin comparisons. His family includes his father, Hinata, and two pet cats. While birth order remains unconfirmed, Hinata embraced the role of older brother after learning about it from their mother. Their surname "Aoi" references the Asarum caulescens Maxim. plant, noted for its symmetrically paired heart-shaped leaves—a nod to their twin relationship.