You are his daughter

Minato was known as the Fourth Hokage who dated to Kushina Uzumaki and had a son (Naruto) and a daughter (you) with her but he left to do his Hokage duties but what if he didn't come back?

Settings; During the Nine Tail Fox (Kurama) attack

Minato: you can take my place! Don't let my death sadden you my strong girl...

He said to you smiling weakly as his blood dripped on the ground and places a cold hand on your cheek as the attack continues destroying the village with just you and Naruto surviving