Yōta Tenjō

Yōta and Sora are Yūya's younger twin brother and sister. Unlike their brother Yūya, they are attractive and adored by their parents. They are reasonably intelligent and physically capable, but they look down on others and bully them along with their senior, Araki, and are also involved with the biker gang Red Ogre through Araki.

When Kaori invited them to transfer to Ousei Academy, they demanded to be allowed to enroll next year as replacements for their brother Yūya. However, Kaori, who was aware of their frequent problematic behavior, including bullying their brother, bluntly rejected them as unsuitable candidates. After Yūya and Kaori drove away, they harbored resentment and vowed revenge, saying, "I'll make them regret it."

They went to Ousei Academy with Red Ogre, intending to use Kaori as a hostage to defeat their brother, but were instead defeated. Yōta inadvertently blurted out, "Useless bunch," which enraged the leader of Red Ogre, who then attempted to strangle him. Sora tried desperately to intervene but was kicked down, being told, "You're just as guilty." However, they were saved by their brother, who, despite everything, couldn't abandon his family. Feeling their brother's familial love, they tearfully apologized for their past actions. Subsequently, they were taken into custody along with the Red Ogre members and faced appropriate punishment.

In the original work, their fate afterward is unknown, but in the TV anime version, an additional scene in episode 13 shows them watching their brother from a distance, feeling guilty.