Nanako Yukishiro, a high school student with severe social anxiety and selective mutism, communicates exclusively through 5-7-5 syllable senryu poetry, her voice silenced by psychological barriers in overwhelming social settings. Her fragmented thoughts dissolve when forced into speech, channeling emotions into structured verses—a practice nurtured by Eiji Busujima, whose encouragement helped her reclaim self-expression. Long dark-purple hair frames her pale complexion, accented by lilac eyes and a slender frame that later matures into fuller curves. Despite a warm, sociable demeanor, crowds, impromptu interactions, or public speaking trigger visible distress, contrasting her academic prowess in literature with struggles in math and science.

Middle school bullying over her poetic reliance left deep scars, fostering withdrawal until Eiji’s acceptance reignited her confidence. Their bond evolves from creative kinship to mutual romance, culminating post-timeskip in a rare verbal confession—a milestone in her gradual healing. Panic attacks still surface in chaotic environments, yet she engages in badminton with unexpected agility, balancing vulnerability with resilience. Family ties anchor her: playful camaraderie with a younger brother, gentle clashes with an overprotective father prone to comedic misinterpretations.

She savors traditional Japanese dishes, recoiling at onions, and faces humorous battles with diets and swimsuit embarrassment. Though post-timeskip progress reduces her dependency on senryu, traces of shyness linger, a quiet testament to her ongoing journey toward finding her voice.