So apparently Nanami was voted against by many fans because they believed it was for her benefit, citing that being adopted into the Kiryuu family was the source of her problems. But not only is found family a much different thing than adoption and it's kind offensive to conflate the two, but Nanami's bigger problem was her biological family: the big brother she was adopted alongside. It was him and his misguided way of protecting her, which led to him also resenting him and cruelly manipulating her dependence on him, that shaped her into a bad person who eventually crashed out. She just needs GOOD influences around her, as shown by her starting to shape up thanks to her interactions with Utena and the other Student Council members, and she can easily get that in the tumblr found family, including from Utena who is already in it.