The brother fucked his sister out of jealousy

My brother is a serious person and has a strong personality. My sister has a quiet personality. Such siblings continued to do naughty things on a daily basis as physical play that continued for several years. One day, the image of a man appeared in my sister. Up until now, he was a kind brother, but he became jealous and restrained his sister as if he had changed. Skipping school and having repeated vaginal sex …