Responses
His father told her lies
As far as we are aware Lulu’s brothers and her share the same mother. It’s just Lulu is the only one who takes after their mother’s looks in the hair and eye department. And frankly I wouldn’t be surprised if giving birth to 4 very powerful Magi users weakened her body at some point when she died or just died of some illness she knew she had. But regardless Lulu’s mother and Clythie’s father are siblings which is how they are related.
And don’t they all have the same mom?? I forgot