Thank you for the upload.
I guess the only work by this author that hasn't been uploaded is this one
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_268501/

Base +6

so why was she taken away here?

Base +7

MC has been going out with his gf Miki he's been working so well he gets a promotion and wants it to go well so he can officially propose to her as he already bought a ring (before they agreed to marry and make a family). His colleague Tanaka is a womanizer who always shows off his conquests and one day tells about Miki being his new catch, MC feels disturbed because that's his GF but brushes it off as Tanaka's delusions however every day he keeps bragging about how he uses Miki to his whims, he even comments how Miki tells she loves him during sex however Tanaka says she's just a meat toilet amd this time he shows MC a video proving everything he said was true.
Shocked MC doesn't do shit about it until late night he gets a call from his GF who then starts moaning and Tanaka shows himself as he fucks Miki as he mocks MC because he knew since the beginning MC and Miki were dating, and how his GF likes him more than MC now that he made her his onahole.
As usual MC only cries his eyes out, Tanaka sends some material which MC eventually faps with.
Second to last page shows Tanaka aimed for Miki to steal the next project leadership from MC.
Last page tells MC quit from the company and that some time later he heard rumours that Tanaka got tired of Miki and quit from the company as well.
What is she doing now he has no way to know as he throws the ring meant for Miki to a river. End.

The GF was a non character after her introduction, most of the text was from Tanaka, MC did nothing but doubt whether Tanaka's story was real until it was too late and we never know how Tanaka was able to get his hands on Miki that story got skipped.

And why Tanaka quit the company? Well, my guess is he was just an useless shit for the job, after stealing the project leadership from his senior who was an outstanding employee he couldn't meet up the expectations and Miki was dumped because he had no use for her left.

Base +18, triz1337 +6, johnsmy +6, Lilisionnach +6, Nakama_P +6, RyogoTM +13, feyan +9

@wikfriback
I had thought Tanaka fired her from the company rather then he quit. But, if that's the case then yeah he thought it had what it took to be a leader and couldn't measure up. Funny how that works.

Base +8

@vjbeal96
Tanaka was just a newbie kouhai of MC with a massive ego but that only takes him that far.

Base +18

@wilfriback
That's what happens when you talk shit and do shit like that. As the saying goes karma is bitch. No doubt the other girls also had a say in that as well as him getting compared to the mc. I only wish there were pages to see it.

Base +8, Nakama_P +6

@wikfriback
what? How does fucking your colleague's girlfriend equates to stealing the next project leadership from your colleague? How does that even work?

Base +6