Ōri Sakaguchi is a 17-year-old high school student and the youngest member of idol group F/ACE, residing in the apartment directly above fellow member Tamon Fukuhara. Professionally, Ōri meticulously maintains a refined "Prince" persona for fans, presenting himself as a charming, devoted figure who pledges to be their protective knight. This polished stage image stands in stark contrast to his offstage behavior. Privately, Ōri possesses a notoriously volatile temper and short fuse, frequently erupting in explosive anger over minor frustrations or perceived slights. These destructive outbursts have resulted in property damage, including repeatedly breaking Tamon's apartment door, leading his manager to issue constant admonishments about controlling these tendencies. Ōri directs significant hostility specifically toward Tamon, viewing him as direct competition within the group. This intense rivalry triggers visible rage in Ōri whenever Tamon makes mistakes, displays perceived lack of effort, or enters depressive episodes. To manage these severe anger episodes, Ōri consumes cheese tea—a Taiwanese beverage blending green or black tea with whipped cream cheese, milk, and salt—which his manager provides as a calming agent. Offstage, his typical attire consists of oversized, baggy t-shirts, a sharp divergence from his onstage wardrobe. His manager originated the comparison of Ōri to a "gorilla," a descriptor subsequently adopted by others.