Nijisister

A die-hard fan or a person who goes to extreme lengths to support the company Nijisanji, ignoring any if not all facts and arguments against their beloved company and the treatment of the company's livers, the term Nijisister has also been caught up in a controversy on the trustworthy site of X with people believing it originates from racists or other controversial ideas

You: It's Selens fault thing went the way they did
Me: You sound like a Nijisister