Cut the tofu into bite-sized pieces.
Slice the kimchi into bite-sized portions.
Heat oil in a pan and grill the tofu until golden brown.
Remove the grilled tofu, then add sesame oil to the pan.
Stir-fry the kimchi, then add tuna and cook together.
Place the grilled tofu on top of the kimchi and stir-fry a little more.
Check the seasoning and serve on a plate.