It is indescribably powerful to see an older Latin American man apologize to his brother for having been intolerant of his sibling's gender identity. That's just not the kind of openness you expect to hear from conservative people living in a traditionally religious and macho culture.
In the opening segment, we meet Juani - whose birth name was Juana Rosa - and who is described as the first Cuban to get female-to-male sexual reassignment surgery. It is Juani's brother, Santi, who regrets his homophobia and begs for forgiveness. Their elderly mom reminisces, also with regret, at having forced a very young Juana to wear dresses even though she hated it. Her acceptance of Juani is obviously as natural as any mother's toward her grown son.