Tom and Lola go to the house of their doctor where they meet other children. 2 girls (5 and 10) and a boy (11) seem to be "at home" nudists; they at least sleep in the nude and seem to usually go around the house with nothing on. Children play with sprinkler, then they go to sleep.
In the first 10 minutes when the boy Ravenfeather (Vaclav Tvaroh, 9) only wears a loose loincloth. It fails to cover anything when he's struggling or carried by someone, front and rear briefly seen a few times.