Sardines, arugula, and rice
This is basically the same dish as Sardines, spinach, and rice . I've also made it with kale. It's very good with arugula - I like it as much as spinach.
Add a little olive oil to sauté pan over medium-high heat. Add the arugula and cook until wilted. Season with pepper, garlic powder, hana katsuo, and soy sauce.