Finely chop the kimchi.
Drain the oil from the canned tuna and prepare it.
Heat sesame oil in a preheated pan and stir-fry the kimchi.
When the kimchi is cooked, add the tuna and lightly stir-fry.
Place the stir-fried kimchi and tuna, along with assorted vegetables, on top of the rice.
Add gochujang and sesame oil, mix everything together, and serve.