HARD EVIDENCE:
https://archive.nyafuu.org/bant/thread/7842556/#q7843077 (The OP in this thread is the fagposter, and this reply has the same ID as the OP and the name "Futuresight", then notice how Kureizy replies to him but then they both delete their posts, possibly told to do so on discord, and if the fagposter wanted to impersonate FSF, he wouldn't have deleted his post)

Examples of faggotry:
https://archive.nyafuu.org/bant/search/image/De_UdhUsCseJ3nLGk2Q_kA/
https://archive.nyafuu.org/bant/search/image/l0xrzO8x0nQeEqGsjYlXMg/ (notice how the poster "Normie" used to use this image, which FSF affiliates with)
https://archive.nyafuu.org/bant/search/image/_Yk8R2D79qcQ59jTjuj6MQ/
https://archive.nyafuu.org/bant/search/image/-F_rA3LaIpV5PCA7skhEYg/
https://archive.nyafuu.org/bant/search/image/KUdmOjrYcc8rfMTJff-Nuw/
https://archive.nyafuu.org/bant/search/image/D5rLQKGZFAE-bTIAZzmLpw/
Many more can be seen if you go to one of these posts and save some of his images, then reverse image search in the archives with them.

Go to https://www.reddit.com/r/Wojak/comments/7vke2f/reformed_wojaknujak_brainlet/
Open the imagine in a new tab and look at the URL, "tumzl8pcdie01"
Reddit filename, 13 characters, which can be seen used here, but edit here:
https://archive.nyafuu.org/bant/thread/8015708/#8015820
https://archive.nyafuu.org/bant/thread/8015853/#8015853
https://archive.nyafuu.org/bant/thread/8020921/#8021251
And the original used earlier:
https://archive.nyafuu.org/bant/thread/7687358/#7687372
And this reddit account: https://www.reddit.com/user/futuresight


The fagposter can be identified through his filenames, at first they were a series of words with pluses+ in-between them, random strings of letters, while some of them are 4chan filenames, but all later changed to numbers. The fagposter also has the U.S.A. flag at all times.

Faggotry threads (the poster "Kureizy" posted often in these threads, who also affiliates with Normie and is a friend of FSF):
https://archive.nyafuu.org/bant/thread/7887772/#q7887772
https://archive.nyafuu.org/bant/thread/7869191/#q7869191
https://archive.nyafuu.org/bant/thread/7842556/#q7842556
https://archive.nyafuu.org/bant/thread/7891965/#q7891965
https://archive.nyafuu.org/bant/thread/7881483/#q7881483
https://archive.nyafuu.org/bant/thread/7876629/#q7876629
https://archive.nyafuu.org/bant/thread/7830126/#q7830126

Both the fagposter and FSF use the word "gayboi":
https://archive.nyafuu.org/bant/thread/7724165/#q7724608 (read down from there)
https://archive.nyafuu.org/bant/thread/7881631/#7881723

The fagposter seems to hate /pol/, just like FSF does: https://archive.nyafuu.org/bant/thread/7850285/#7850559

Gets defensive once it is assumed he is FSF: https://archive.nyafuu.org/bant/thread/7891965/#q7891979

Fagposter calls someone cringe and doesn't (You) them, trait shared with FSF, once he insults Kureizy (scroll up and you'll see the fagposter posting one of their images): https://archive.nyafuu.org/bant/thread/7881508/#q7883300

Hatred of the poster "NCP" can be seen in the fagposter, which is a trait shared with FSF:
https://archive.nyafuu.org/bant/thread/7858445/#7858511

Hatred of the Romanian can also be seen, which is shared with FSF:
https://archive.nyafuu.org/bant/thread/7837265/#q7837265
https://archive.nyafuu.org/bant/thread/7837281/#q7837281
https://archive.nyafuu.org/bant/thread/7831721/#q7831721
Notice how the fagposter is so interested in the Romanian, which implies that he is a /bant/ user, and not from /int/, due to his interest and knowledge of the Romanian:
https://archive.nyafuu.org/bant/thread/7828630/ (notice the thread was deleted, possibly by OP)
And notice how he knows about the "sage Sweden" poster, which he wouldn't know about if he was an /int/ regular and first time /bant/ user:
https://archive.nyafuu.org/bant/thread/7842556/#q7842721 (the swedish sage poster used to reply daily in the Happy Day threads with "saged", which FSF always participates in)

FSF liked to call the Romanian "Fake Romanian":
https://archive.nyafuu.org/bant/thread/7858133/#7858477
https://archive.nyafuu.org/bant/thread/7861860/#7862099
https://archive.nyafuu.org/bant/thread/7857979/#7858059
https://archive.nyafuu.org/bant/thread/7856133/#q7858997 (being friendly with the poster "Kureizy" as well)
While the fagposter called him "Fake Gaymanian":
https://archive.nyafuu.org/bant/thread/7815992/#7817932
https://archive.nyafuu.org/bant/thread/7817920/#7818011
https://archive.nyafuu.org/bant/thread/7817849/#7818187
https://archive.nyafuu.org/bant/thread/7866075/#7866084

And hatred of the Dane as well:
https://archive.nyafuu.org/bant/thread/7857222/#7857492
https://archive.nyafuu.org/bant/thread/7857222/#7860242 (FSF also likes to refer to the dane as a worthless neet with which he toys with)
https://archive.nyafuu.org/bant/thread/7856133/#7858471
https://archive.nyafuu.org/bant/thread/7856133/#7859139

Notice how the fagposter uses the term "auto fellatio":
https://archive.nyafuu.org/bant/thread/7859096/#7859162
Which was used multiple times by FSF:
https://archive.nyafuu.org/bant/thread/7588930/#7589312
https://archive.nyafuu.org/bant/thread/7869324/#7870638
https://archive.nyafuu.org/bant/thread/7224959/#7226597 (FSF likes to use that image, as shown here with his trip on: https://archive.nyafuu.org/bant/thread/7960059/#7968178 https://archive.nyafuu.org/bant/thread/7963260/#7963912)
https://archive.nyafuu.org/bant/thread/6955555/#7070945
https://archive.nyafuu.org/bant/thread/7252716/#7254670

FSF and the fagposter also sarcastically or otherwise reply to people with "Thanks for the bump" or "Nice bump":
https://archive.nyafuu.org/bant/thread/7927451/#7927566
https://archive.nyafuu.org/bant/thread/7893622/#7897254
https://archive.nyafuu.org/bant/thread/7849320/#7853940
https://archive.nyafuu.org/bant/thread/7881483/#7883103

https://archive.nyafuu.org/bant/thread/7852310/#7852519 then read down from there
It seems the fagposter and FSF are responding to each other agreeably, and with short intervals in-between, notice how the fagposter has 2 different IDs, this means a change of IP has occured, which FSF can easily do as he is a phoneposter. This is furter proven here:
https://archive.nyafuu.org/bant/thread/8036807/#8036807
https://archive.nyafuu.org/bant/thread/8036419/#8036419
His ID keeps changing at random, this is due to him reseting his phone to get new IPs