Nagi Azuma's younger sister, Ibuki, is currently a first-year junior high student, in the throes of adolescence.

While she looks down on her older brother, a third-year student, as if he were an insect, she adores and admires his childhood friend, Amagi Hina, more than a real sister.

What was the reason this manipulative and detached younger sister decided to try and set up the uncool brother she looked down on with the older sister she admired?

■■The official sequel to this work is scheduled to begin serialization on 2021/11/24!■■

『I Failed My High School Debut. Befriended by a Sweet and Dangerous Kuudere Wolf』

★Now in high school, Azuma and Hina find themselves in a love triangle with the most dangerous beautiful girl in school!? What is the secret of Kirishima Marika, feared by the entire school?

※This is the serialized version of a previously written short story.