Yuri Ni Hasamaru Otoko Wa Shineba Ii?!Boys Who Get Between Yuri Are Better Off Dead?!; 百合にはさまる男は死ねばいい！？; Boys Gilding the Lily Shall Die; Yuri ni Hasamaru Otoko wa Shineba Ii?!; 插足百合的男人不如去死！; 百合はさ

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.