From: https://twitter.com/Niseworks
Just Monika-centric pics.
Update 3/28: Pic 19 isn't a duplicate, it's an alt that transitions to Sayori.
Update 4/2: Um... No comment.
Update 4/6: The last image (27) was made when "Stay" won the poll attached to the gif I split into 3.
Update 4/13: Image 39 has a Base64 translation of "Thank you for being a part of the literature club!"

是心跳文学社🐴，

Base +3, Rank47 +3, Allan Whitley +6, 你妈没了 +2, BeBtr +1, Wlm3201 -4, Vofreude +3

J̴̸̳̩̺̣̗̠̗̪̪͕̲͛ͨ̏ͥ̇̔ͪͪͫ̄̽ͮͫͧ̐͛͘͟͟u̷̴̼̤̪͖̝̙ͩ͗͗̆̆͞ͅͅṡ̢̧̘̯̙̟̺͇ͫ̂́͡t͋̅͆̈́̈̉ͥ̂͏̶̧̨̱̫̝̝̝̙͓̳̲͙̝ ̶̊̊̇͂ͮ́̈͌͊̔ͤ̌̚̚͏̬͎̮̯̱͚͕̱̻̠̭̩̝̟̝M̡͓̖̺̬̟̜̮̗̼͔̱̜̝͊͊ͪ̃̀ͪͣ͐̅ͣ̓ͣ̒̎ͨ̈́̈̔̕͡͠õ̸̢͖̮̺̝̜͎̪̤̤̖̪̭͖̝͚̃̌͒̕n̅ͨͧ̔ͩ̇͐̍̔ͩͩ͏̵̭̼͎͚̯̞͖͞i̵̺͓̰͙̺̖͉̤̫̯̤̻ͧ̽ͧ̐̌̉̋̆̋̋̿̊ͪ͑̄͜͝ͅḳ̷̶̹̙̪̰͊̾̋̏̒͑̈a̐̉͂ͥ͊ͫͦͩͪ̉̃ͤ̂͝҉̦̲̭̰̠̹͓͇

Base +1, 锤石丿 +3, パンツのPants +6, zoidsdx44 +6, Zeikfried +15, sideshow bob +6, 1215897415@qq.com +6, robppp -6, T.N.N. +6, PaxAntarctica +4, agoodname666 +6, Allan Whitley +6, IcePlume +11, and 5 more...

一阵恶寒

Base +1, MrNannan -1, Allan Whitley +6

J̴̸̳̩̺̣̗̠̗̪̪͕̲͛ͨ̏ͥ̇̔ͪͪͫ̄̽ͮͫͧ̐͛͘͟͟u̷̴̼̤̪͖̝̙ͩ͗͗̆̆͞ͅͅṡ̢̧̘̯̙̟̺͇ͫ̂́͡t͋̅͆̈́̈̉ͥ̂͏̶̧̨̱̫̝̝̝̙͓̳̲͙̝ ̶̊̊̇͂ͮ́̈͌͊̔ͤ̌̚̚͏̬͎̮̯̱͚͕̱̻̠̭̩̝̟̝M̡͓̖̺̬̟̜̮̗̼͔̱̜̝͊͊ͪ̃̀ͪͣ͐̅ͣ̓ͣ̒̎ͨ̈́̈̔̕͡͠õ̸̢͖̮̺̝̜͎̪̤̤̖̪̭͖̝͚̃̌͒̕n̅ͨͧ̔ͩ̇͐̍̔ͩͩ͏̵̭̼͎͚̯̞͖͞i̵̺͓̰͙̺̖͉̤̫̯̤̻ͧ̽ͧ̐̌̉̋̆̋̋̿̊ͪ͑̄͜͝ͅḳ̷̶̹̙̪̰͊̾̋̏̒͑̈a̐̉͂ͥ͊ͫͦͩͪ̉̃ͤ̂͝҉̦̲̭̰̠̹͓͇

Base +8, zoidsdx44 +6, WeebTour86 +1, cnstnc +5, Lostalgia +9, 锤石丿 +3, emokid258 +4, Zeikfried +15, japali-lhj +1, sideshow bob +6, 1215897415@qq.com +6, thusgrim +6, T.N.N. +6, and 12 more...

moooo~nika！hei hei monika hei moni monika

Base +5, Masterzero +6, Lostalgia +9, Case1234098 -3, Allan Whitley +6

无意破坏气氛 但是最后几张让我联想到了那个自由的男人...

Base +7, GAA7 +4, T.N.N. +6, Allan Whitley +6, ha1997 +6, kevin_ff +1, scpony +6

https://www.youtube.com/watch?v=YYoOIGBcN48

Base +14, anawin +6

画的挺有感觉

Base +10, SJ88S +6

This art and poses look incredibly similar to an old flash game where you stripped a furry office girl down through trivia. Used to be on newgrounds back in the 2000s. Idk if it's the same artist/developer or not, can't remember the game. It's uncanny how similar it is though.

Base +6, Letto Lettosa +6, TheMasterOfYou +7, budgieboi +6, Nelath +6, Lboiiii69420 +2, avikdas99 +8, malikski +6

Just Monika a~

Base +1

@Longjon you're probably thinking of this one (and I'm appalled that I remembered the group's name off the top of my head). https://e-hentai.org/g/39733/1a2e6a3656/

Base +7, Kokachin +6, LegoArielFanMaster +9, Nelath +6, Thunktshi Thunaju +6, Gaiadrill +8, jtmjtm +6, gargasar +6

Nice ! :3
Lovable

Base +6

胸有大痣

Base +2, scpony +6

Just Monika and me

Base +1, Allan Whitley +6

steam 上现在免费来着 😫

Base +6, Allan Whitley +6

Just Monica

Base +2

monika！monika！

Base +1

心跳骤停文学社

Base +6, ha1997 +6

我宣布monika是我老婆

Base +6, ha1997 +6, ARMA_X +1

J̴̸̳̩̺̣̗̠̗̪̪͕̲͛ͨ̏ͥ̇̔ͪͪͫ̄̽ͮͫͧ̐͛͘͟͟u̷̴̼̤̪͖̝̙ͩ͗͗̆̆͞ͅͅṡ̢̧̘̯̙̟̺͇ͫ̂́͡t͋̅͆̈́̈̉ͥ̂͏̶̧̨̱̫̝̝̝̙͓̳̲͙̝ ̶̊̊̇͂ͮ́̈͌͊̔ͤ̌̚̚͏̬͎̮̯̱͚͕̱̻̠̭̩̝̟̝M̡͓̖̺̬̟̜̮̗̼͔̱̜̝͊͊ͪ̃̀ͪͣ͐̅ͣ̓ͣ̒̎ͨ̈́̈̔̕͡͠õ̸̢͖̮̺̝̜͎̪̤̤̖̪̭͖̝͚̃̌͒̕n̅ͨͧ̔ͩ̇͐̍̔ͩͩ͏̵̭̼͎͚̯̞͖͞i̵̺͓̰͙̺̖͉̤̫̯̤̻ͧ̽ͧ̐̌̉̋̆̋̋̿̊ͪ͑̄͜͝ͅḳ̷̶̹̙̪̰͊̾̋̏̒͑̈a̐̉͂ͥ͊ͫͦͩͪ̉̃ͤ̂͝҉̦̲̭̰̠̹͓͇

Base +5, Allan Whitley +6

艹，大晚上的，差点离开这个美丽的世界

Base +6, Allan Whitley +6, ha1997 +6, REsouse +6

心惊肉跳文学社

Base +1, Allan Whitley +6

More variants on the user's on the user's Kofi page https://ko-fi.com/nisego

Base +8, Hakumen EZ 2 +6, ktaguri13 +9, LegoArielFanMaster +9

心肺停止文学社

Base +6, ha1997 +6, a random guy12 +4

好色啊，这色女人想干死她，想把她肚子搞大一直狠狠干她

Base +7, ARMA_X +1, xxljy -1, zhmou -6, 8080ws -2, 十露盘 -1, REsouse +6

↑试试就逝世

Base +5, xxljy +1, BeBtr +1, wu_mi +4

Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞Jͤ̀҉̷͍̺̟̳͔̞u̸̙̳͂̿͆ͯ̋̒̇ͨ͟͠ś̳͕͖̬̮̳͋̄t̨̥͖͕̃͌̉̈ͮ̿ ̷͇̾ͬ̋M͚̝̘̞̯̦̌̂͑ͤ̓ͭ̀o͒̌̑̒̎͊͆ͬͬ҉̩̥͎n͖̻̜̰̪ͦͣ͐́͆̀̚ì̙̝ͪ͞k̶̴̺͕͓̹̱͚̪̍ͫ͂̇ͬ̑̉̓̍a̱̋ͦ͗̌̌̊͊̊́.͔̮̐̊̔́̀̕J̖̠͇̝̳̪̩͛̎̑͌u̩̥̓͑̿́̏ͭͫ̀s̢͎͔̞̳̣̻͓͋͋̐̍ͅͅt̜͍͍ͦͦ̀̄̚ ̷̦̖̘̤̱̮̘̪̇ͣ̿͗͆̓M̷̨̘̘̦͖̪̟̱͆̈́ͨ̓ͫ̆ͅo̥̟͓̓ͯn̿̔̑ͧ͛̽͏̡͇͎̳̕ị̹̀ͭ̿̂͟kͩ͑̇҉̨̠͈̼ā̲̣̣͖̠͓̞̞̾.̵̥͈̝͚̘̣̘͍̘̂̿ͫ͞

Base +1, 4flame9 -7, KBBSC +6, Claw111 +6, a random guy12 +4

Just Monika

Base +7

心惊肉跳文学社

Base +1

太棒了！

Base +1

性精蛋跳纹穴射

Base +3

wdnmd我图动了 我不看了

Base +5

Page 20 has a gif version where Monika glitches out and is temporarily replaced by Yuri in the same pose. And there’s supposed be another gif with Monika in a different pose glitching out with Natsuki. But I guess you didn’t add them because there are blink-and-you’ll-miss-them frames of Yuri and Natsuki in negative colors and with demonic faces.

Base +6

J̴̸̳̩̺̣̗̠̗̪̪͕̲͛ͨ̏ͥ̇̔ͪͪͫ̄̽ͮͫͧ̐͛͘͟͟u̷̴̼̤̪͖̝̙ͩ͗͗̆̆͞ͅͅṡ̢̧̘̯̙̟̺͇ͫ̂́͡t͋̅͆̈́̈̉ͥ̂͏̶̧̨̱̫̝̝̝̙͓̳̲͙̝ ̶̊̊̇͂ͮ́̈͌͊̔ͤ̌̚̚͏̬͎̮̯̱͚͕̱̻̠̭̩̝̟̝M̡͓̖̺̬̟̜̮̗̼͔̱̜̝͊͊ͪ̃̀ͪͣ͐̅ͣ̓ͣ̒̎ͨ̈́̈̔̕͡͠õ̸̢͖̮̺̝̜͎̪̤̤̖̪̭͖̝͚̃̌͒̕n̅ͨͧ̔ͩ̇͐̍̔ͩͩ͏̵̭̼͎͚̯̞͖͞i̵̺͓̰͙̺̖͉̤̫̯̤̻ͧ̽ͧ̐̌̉̋̆̋̋̿̊ͪ͑̄͜͝ͅḳ̷̶̹̙̪̰͊̾̋̏̒͑̈a̐̉͂ͥ͊ͫͦͩͪ̉̃ͤ̂͝҉̦̲̭̰̠̹͓͇

Base +2