Kimi to Tsukiyo no Juliet

This is a love that is worth putting everything on the line. The Hanagaki family hates their business rival, the Kowloon family. Their family goal is "to defeat the Kowloon family." Their only daughter, Kotori, is always fighting with Jin Kowloon, the son of the Kowloon family, who goes to the same junior high school. The two have always fought like "cats and dogs," but when they run into each other at school at night, they are drawn to each other despite their bickering. However, he two rival families will not allow them to get close to each other. The whole world and their destiny are set against them, trying to keep them apart. And the two of them will... (Source: Ciao Comics, translated)