Yuri Ni Hasamaru Otoko Wa Shineba Ii?!Yuri ni Hasamaru Otoko wa Shineba Ii!?; 百合にはさまる男は死ねばいい！？; Boys Gilding the Lily Shall Die!?; 插足百合的男人不如去死！？; ¡¿Los Hombres Que se Meten en Medio del Yuri Deberían Morir?!

This is a manga about a female brass band member who was proud of playing 1st, when a transfer student who played 1st at a strong school at the national level appears. This manga depicts the unnameable emotions of the members of the girls' brass band.