Well, you're right about "friends," bro, but they all seem to have their own goals. Suguha makes sure that Kirito doesn't collapse from depression when he finds out everything. Sinon and Agil use Kirito and apparently they don't need him to stay at home and get drunk from grief. Klein and Alice, I don't think they know exactly about Asuna and Inode. The only one I can't figure out is Liz-she wants Kirito for herself and she doesn't care about his condition. The first thing she should have done was take the evidence and show it to Kirito, but no, for some reason she listens to Inoda's stupid plans and stands still.
I'm not sure if Fujino has the guts, but it's not about bravery. If the subscribers put pressure on him, he will do it.
There is also an option - there is such a type of ending - "conditional" revenge.
A long time ago, I was playing an NTR visual novel. There, MC's wife cheated with MC's father. And in this game there was an ending in which the main character finds out everything, divorces his wife, then films how she cheats and puts the video on the Internet. As a result, his ex-wife is fired from her job, all her friends turn away from her, parents kicked her out of the house, but... But in the end, MC father takes this woman with him to another country, they get married there, and as a mockery, she sends a photo of them and MC's father hugging, and the ex-wife is already pregnant. That is, it turns out to be revenge, but the consequences for the cheating wife are not so bad, on the contrary - she found her happiness, and MC was left alone with a psychological trauma. Revenge took place, but the "punishment" did not work.
That's the kind of ending Fujino can make. Asuna and Kirito will break up and Asuna will be happy with Inoda, and Kirito will either be left alone or will be chained at Suguha's house.