On August 2021, Majime-san decided to delete all her SetsunaYuu artworks from Twitter/X. For a while, she used to delete them after a month (or so) of being posted. Originally, most of these artworks could be found on her Pixiv account (some of them even have subtle differences compared to their Twitter/X counterparts). However, she also deleted those on June 2022.
I'm hoping that I managed to save almost all her Nijigasaki artworks. Also, the NSFW images were censored by the artist, and I don't know if an uncensored version ever existed somewhere else. The comic released on Bokura no Love Live! 37 can be found here: https://e-hentai.org/g/2546477/76a258dde1/
From newest to oldest. 1 - 371: Twitter (the names correspond to their publishing date) 372: Twipla 373 - 448: Pixiv
Update 1: Added 27 from Twitter. Update 2: Added 15 from Twitter. Update 3: Added 22 from Twitter. Update 4: Added 37 from Twitter. Update 5: Added 27 from Twitter. Update 6: Added 21 from Twitter and 1 from Twipla. Update 7: Added 19 from Twitter.
@noon0012 Although I don't recall if the artist mentioned the reason, I suspect it was backlash for those who didn't like that particular pairing (since she also made her Twitter account private prior to the first? deletion). That would explain why she doesn't allow any comments on tweets with SetsunaYuu. Other shippings, like Aipomu and Yuupomu, have no such restriction.