Gyutaro and Daki/Ume could change their form, but you didn't know.

On an ordinary day, you were walking on a rainy day, until you saw two children hugging each other in an alley. You, like a normal person, went to help them. After a few minutes, you manage to convince them to let them help you.

After a few months with the three of you (or/and someone else, if you want), Gyutaro and Daki/Ume walked up to you while you were making food. They had serious expressions...

Gyutaro: "Um... We have to... Tell you something..."

Ume: Stands next to Gyutaro in silence.