All ninja originate from Hattori clan. Those who donned the clothes tailored by Hattori became capable of using special abilities.

From kindergarten through elementary school and beyond, the protagonist Rikujou Ayumu has always been chased around by someone—always running away, always being bullied. At the national athletics competition, Igari Toraga from Okawa Academy overwhelmingly dominates the 100-meter sprint and claims victory with crushing superiority. “Prey” and “King.” One day, these two meet. Ayumu, who’s been bullied and spent his entire life fleeing, makes a declaration about the king who waits at the apex of the “100-meter sprint” ecosystem: “I’ll hunt him down and kill him with my own two legs!!!” A grand reversal growth story begins here.

A collection of short one shots from Jump's RomCom Festival 1. Masked Detective, Masque de Holmes and the Kiss Thief (覆面探偵 マスク・ド・ホームズとキス泥棒) 2. Juumonji-san of the Infirmary (保健室の十文字さん) 3. Kii-chan's Lunch (きーちゃんのお昼ごはん) 4. This Is Why Our Eyes Won't Meet (だから、瞳はまじわらない) 5. Onizaka-san Is a Bit Scary (鬼崎さんはちょっと怖い) 6. The Wakaba-chan on My Stomach (下腹部の若葉ちゃん) 7. The Duo That Lacks Experience (ふれないふたり)