Ah!! Romeo and Juliet - S1.E6

Tsugumi has recently fallen in love. Ibari does not approve as her boyfriend, Bunta, is from the Umiushi family, the Ōzora family's traditional enemies. Hibari suggests Tsugumi and Bunta pretend to commit suicide, Romeo and Juliet style, to change their parent's minds. They decide to elope instead and are caught by Ibari wielding a shotgun. Bunta flees while Hibari defeats Ibari in a shootout. Days later Bunta marries a rich businessman's daughter instead.