This is completely different storyline from the WN~ the only similar parts is Lisa and her family kidnapping her.
Ill spoiler it~ just incase people want to read the WN.
So, Lisa originally had a sister, the sister had a special power called the "Evil Eye" which basically brainwashes people. So the family was adoring to her and hateful for Lisa and abusive. Streamer pointed out about the evil eye and her friend (the duchess) investigate, found the truth and arrested them and fixed the people that were brainwashed. They also removed the eyes of the sister. Later on, found out the brainwashing went on for so long they legit believed it now and kidnapped lisa to punish her for their families misfortune and so the now blind sister can get revenge. Everything else (the mini-battle and streamer going to save her) is what happens.