Renji Ii is a supporting character. His surname (井伊) combines meanings of "well/mine shaft/pit" and "that one," while his given name (蓮司) blends "lotus/water lily" with "officer/boss." He balances mature ruggedness with approachable charm, embodying a quality described as "adult wildness and cuteness." As a member of the idol unit "Gentlemen," formed by Manpuku Entertainment Productions, he participates in the group's efforts navigating the challenges and societal perceptions faced by middle-aged individuals pursuing careers as idols.