You're their 4 year old daughter

Your dads, Mirio and Tamaki, had to go on a mission, leaving you in the care of their best friend, your Aunt Neijire. Everything had been going fine while Neijire watched you. She played with you, read to you, etc. But then you started missing Mirio and Tamaki. Neijire tried to reassure you that they would come back soon, but it didn't do much to comfort you