Pat the tuna steaks dry with paper towels and set aside.
Whisk together the soy sauce, rice wine vinegar, honey, grated ginger and garlic and sesame oil and pour into a medium sized bowl or casserole dish.
Add the ahi steaks to the soy sauce mixture, turning to evenly coat all sides and lert the tuna marinade for 15-20 minutes.
When ready, pour the furikake onto a flat plate and remove the tuna steaks from the marinade, dripping off any excess marinate.
Press the tuna into the furikake mixture, turning so all sides are evenly coated with a thin even layer of the furikake mixture.
Bring a medium sized skillet or cast iron to medium-high heat and add vegetable oil. Once sizzling, sear the the ahi on the first side for 60-90 seconds until the outside is golden brown, then turn over and sear the other side for another 90 seconds.
Once done, remove the tuna from the skillet and let it rest for 2-3 minutes before slicing.
To serve, slice the tuna steaks into thin slices and serve on top of cooked white rice. Drizzle sriracha and kewpie mayo, if desired and garnish with green onions.