The setting is a certain high school. Hitsujiya, a kind male transfer student, teaches Kokudou, a lonely male classmate, little useful information, techniques, and life hacks that will be useful in school and life. Then, Kurodo also takes Hitsuji out of school to teach him some tricks. Kurodo's hidden secrets. It was a mysterious trick that caused a useless phenomenon in which bird droppings would always fall in the same place if a certain procedure was followed. Kurotani says to Hitsuji, who thinks it's a useless delusion, if you believe my words even by 1%, why don't you try it? Real secrets. "One-Punch Man" and "Mob Psycho 100" original work by ONE, original work "Don't Shinobu! Chiyo-chan" and "Katagimodoshi" super-illustrated by Kiyoto Shitara. Two people on the back roads of youth bring you...a slightly mysterious juvenile!!