https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_654524
https://www.dlsite.com/maniax/work/=/product_id/RJ01455842.html

TLDR scumbag MC breaks up with flat MH because he wanted a new girl with bigger boobs and lies to her that it's because he wants to focus on his studies. Time skip and she moved on and got a new BF and MC finds out her boobs are huge, takes advantage of her lingering feelings and forces himself on her to fuck her then tries to get back with her which she rejects, at the end she realizes she just was being used and he takes photos to blackmail her with.

Still no netori tag.

Base +22, Senpai SAP +5, molenewe +6, Fofotron +26, nuts987 +14, Manakemia +7

Well the MC is a piece of shit. That's different. And if boobs are all it takes for him to switch then he'll pay for it in time I'm sure.

Base +8, nowittycomment +18

Oh this one's a great reference to use as an actual crystal clear example of netori in discussions about NTR where people so easily mistake regular cheating or even vanilla cheating as being netori.

Base +11