Ayami Sasaki, a first-year student at Itan Private High School, forges a friendship with Shoko Komi during a school trip. She sports straight dark brown bob-cut hair with bangs, typically accessorized by a black headband. Her standout trait is her mastery of yo-yo tricks, honed to a third-place finish at the U18 Yo-Yo World Championship. Childhood mockery over her “outdated” hobby led her to hide her passion, falsely claiming to spend free time idly. On the school trip, she joins Komi and Mikuni Katou to craft memorable moments for Komi. During a staged ninja ambush at a movie village, she dons a hannya mask and deploys her yo-yo expertise to shield Komi, earning the moniker “Y.Y. Hannya.” Komi and Mikuni’s admiration afterward sparks her growing pride in her skills. Energetic and forthright, Ayami thrives on romantic gossip, openly probing peers about crushes. She actively nudges Komi’s budding feelings for Hitohito Tadano, even orchestrating a train seat switch to pair them. Though outwardly bold, she initially masks vulnerability about her yo-yo dedication, gradually shedding insecurities through her friends’ support. Ranking 143rd academically among 150 students, she balances summer training sessions for yo-yo refinement with cravings for fried noodles and frankfurters. Embracing her identity as a performer, she later appears in Kyoto and New York, balancing travels with her friend group’s antics. Her name forms an anagram nod to Asamiya Saki from *Sukeban Deka*, echoed by her yo-yo’s cherry blossom emblem—a subtle tribute to her thematic roots merging rebellious spirit with unconventional heroism.