Murakami Fumio and Mochidzuki Erena are great friends with each other, but their personalities couldn't be further apart, making everyone else wonder why they're so close. Some people don't even understand why they're friends. This is the story of how they became friends.
Chloe-san, the saying is 
"fighting like cats and dogs."
Chloe-san, es heißt 
„kämpfen wie Hund und Katz“.
Chloe-san, el dicho es "pelear 
como el perro y el gato".
Chloe-san, el dicho es 
"llevarse como el perro y el gato".
Chloé, dans ce cas-là, c’est
« S’entendre comme chien et chat ».
Chloe-san, si dice 
"litigare come cane e gatto".
Chloe-san, na verdade é "brigando
 como gatos e cachorros".