[ Minato would absolutely say that, but Kido has enough sense to keep Rei's face out of the water, at least. She wades up to the edge and holds her hand out for Rei to take. ]

We'll start with floating on your back. I'll keep a hand under you so you don't sink, and I'll hold your hand too if you need something to hang onto. All you have to do is breathe calmly, and the air in your lungs will help you float.