Okay kiddo, so let me try to explain what "cis-emo" means in simple words.
"Cis" means that someone identifies as their gender that they were assigned at birth. It's like if you were born a boy and you still feel like a boy, then you are cis male. "Emo" is a term used to describe a type of music and fashion style that is often associated with emotional or sad feelings.
So "cis-emo" describes a person who identifies as their birth gender and expresses themselves through the emo culture. They may like to wear dark clothes and listen to emo music, which can help them express their feelings. It's just one way that someone can express themselves and feel comfortable in their own skin.