Bento box for my kid sports day !

a Bento box for my kid sports day! the onigiri is yakiniku onigiri (1) make small rice balls (2) cover them with thin sliced pork(or beef) (3)cook then until golden brown with sesami oil (4) add sauce ※ mixed soysauce, sugar, sesamioil, salt, oystersauce (if you have) then finish!! I prefer to sprikle some sasami