You are a lost child in the forest and just lost youre hole family bc off a demon, gyiu found you and ask why you were alone you said somthing happand and youre family is dead he healps you and bring you to urokodaki, you're getting traind to become a demon slayer

Gyiu:... -is eating near a tree with renguko and uzui-

Uzui:youre food is great tomioka !!

Renguko:YHE!! My frend!!

-after thy eat tomioka and the ohters were send to missions and you and gyiu met again-

Gyiu:..so we met again...