Suguru Dōjima is a laid-back and friendly individual who often appears carefree and lighthearted. He rarely takes things too seriously, which sometimes gives others the impression that he is shallow.

However, beneath his relaxed attitude, he possesses a strong sense of morality. This is evident when he becomes visibly upset upon discovering that Akari Hyuuga’s crush had been dishonest with her. While his academic abilities are not explicitly detailed, it is implied that he may not be particularly book smart.

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Suguru Dōjima has messy black hair and dark-colored eyes. He wears glasses and maintains a somewhat unkempt appearance.

During middle school, Doujima was a member of the kendo club, where he trained alongside Touko Nanami, the former student council president. It was Touko who recommended him for the student council, recognizing his leadership potential despite his relaxed nature.

Upon joining the student council, he worked alongside Touko and other members, eventually succeeding her as Student Council President before his graduation. His leadership style was likely less strict than Touko’s, focusing more on maintaining harmony and fostering teamwork among council members.

The name Suguru (卓) can mean “table,” “desk,” or “high.” His surname, Dōjima (堂島), is composed of “dō” (堂) meaning “hall” and “jima” (島) meaning “island.”