Shuko Komi, born Nimi Shuuko, is Shouko Komi’s mother and Masayoshi Komi’s wife. Her dark purple-black hair, parted left and cropped at the neck, mirrors her daughter’s appearance, paired with a vibrant smile that defies her family’s quiet tendencies. Outgoing and effusive, she serves as her household’s primary conversationalist, humorously puzzling over how her reserved husband and children bond without words. Shuuko first met Masayoshi in high school under her maiden name Nimi, initially unimpressed by his stoicism. His quiet competence gradually softened her stance, sparking affection. Orphaned young after losing her parents and grandmother, she spent years in solitude until Masayoshi’s high school proposal bridged her loneliness. Playfully embracing a "Forever 17" identity, she revels in romantic scenarios, even coaxing Tadano Hitohito to recreate his confession to Shouko to savor secondhand youthful passion. While predominantly lively, fleeting melancholy humorously etches age onto her features, vanishing with her renewed cheer. Her name, Komi Shūko, merges "excellent" (秀) and "child" (子), aligning with her striking looks. The shift from her maiden name Nimi ("new view") to Komi ("old view") underscores a deliberate linguistic juxtaposition. Though now exuberant, her youth revealed kuudere tendencies—aloofness melting into warmth upon familiarity. Often mistaken as Shouko’s sister due to her youthful glow, Shuuko draws admiration effortlessly. She champions her daughter’s social growth, hosting friends with zeal that occasionally flusters Shouko. Her marriage thrives on silent mutual understanding, rooted in shared solitude. Quirks include her "Forever 17" mantra—nodding to her voice actress’s persona—and comically aging when disheartened, a visual gag underscoring her emotional transparency.