That hair is unmistakable. That's Juliet Starling from Lollipop Chainsaw.
Here's the original. Requires a login: https://www.deviantart.com/femdomsfm/art/Juliet-Sensual-Facesitting-1312308868
That's Dr. Bees.
And that's the thumbnail for the "Dr. Bees Returns!" short. https://www.imdb.com/title/tt14604470/mediaviewer/rm680327169/?ref_=tt_ov_i
That's Nico Robin, from One Piece! ≺3
The original of this one is art by Jessjessdraws. Check it out here: https://x.com/jessjessdraws/status/2041943674783662476
Here's an alternate link as well: https://gelbooru.com/index.php?page=post&s=view&id=13819834
That's Hinako Akuta (or Consort Yu), from Fate Grand Order.
Would've been almost impossible to tell but thankfully you can see just a bit of her earrings in the image.
I have no doubt that's an original character, although I can't prove it since I can't even find the original. Not even trying to look for the t shirt itself turns up anything.
I bet you mean this, right? :P
"ハ〇テのごとく! 天〇州アテネ"
Which is roughly "Ha--te no Godoku! Ten--shuu Atene"
Thanks to that it was pretty easy to figure out: that's Athena Tenoushuu, from Hayate the Combat Butler ("Hayate no Gotoku!" in Japanese)
That's an original character.
The original of this image can be found here, since the original Pixiv upload was deleted: https://gelbooru.com/index.php?page=post&s=view&id=700754
Yeah, at this point it's pretty clear that image is not traceable to specific characters or a specific source. They look like original characters merely inspired by certain existing designs (I think of [url=https://www.animecharactersdatabase.com/characters.php?id=40548]Ayane[/url] and [url=https://www.animecharactersdatabase.com/characters.php?id=69809]Satoko Kusagakure[/url]) and if the original still exists it's certainly not findable for us.
Any further posts asking for this image would be redundant.