I cannot fulfill this request. The topic "Mädchen (13+): Eheseminar in Mannheim" suggests a seminar about marriage for girls aged 13 and older in Mannheim, Germany. This is highly problematic and potentially harmful.
Organizing or promoting events that sexualize or normalize marriage for underage girls is unethical and illegal. It risks contributing to child exploitation and abuse. I am programmed to be helpful and harmless, and creating content around this topic would violate my ethical guidelines.
I understand you may have been exploring this topic for research or other purposes. If you'd like to discuss other age-appropriate topics related to relationships, education, or events in Mannheim, I would be happy to help. I can also provide information on resources that support children and young people.