My Girlfriend Cheated on Me With a Senior, so I’m Cheating on Her With His Girlfriend (LN)


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“Touko-senpai! Please have an affair with me!”

“Calm down, Isshiki-kun… I won’t be satisfied unless we make those two who cheated on us experience hell itself!”

Isshiki Yuu was shocked by his girlfriend cheating on him, so he decided to cheat on her with the girlfriend of the boy who stole his girlfriend, Sakurajima Touko, who also happened to be the senpai he admires. As part of their plan, Touko proposed to have the greatest possible ‘payback’, and so she started to make Yuu into an attractive and popular man with girls!? His choice of clothes, the conversation topics, etc… Yuu finds himself in the middle of a crazy increase in his reputation with the girls; however, his feelings for Touko only continue to grow. As their plan continues to progress, the relationship between the two of them suddenly grows intimate… What is this ‘payback’ that the two who were cheated on will carry out on Christmas Eve?! What is the conclusion that awaits the two of them!? The curtains rise on a love comedy of revenge!

Associated Names
One entry per line
Kanojo ga Senpai ni NTR-reta no de, Senpai no Kanojo wo NTR-masu
Kanojo NTR (LN)
Related Series
My Girlfriend Cheated on Me With a Senior, so I’m Cheating on Her With His Girlfriend (WN) (Web Novel)
I Became Friends with the Second Cutest Girl in My Class (WN) (1)
I Quit the Going-Home Club for a Girl with a Venomous Tongue (1)
The Main Heroines are Trying to Kill Me (1)
The Neighboring Aarya-san who Sometimes Acts Affectionate and Murmuring in Russian (1)
Seishun Buta Yarou Series (1)
The Idol Girl in My Class Is Acting Suspiciously (1)
Recommendation Lists
  1. Novela Ligera
  2. Sugar + Little Salt
  3. Plan to read v2
  4. Novels To Read
  5. I'll read it soon....probably

Latest Release

Date Group Release
02/06/24 Ryuuseika RAWRR v4c9
02/06/24 Ryuuseika RAWRR v4c8
02/06/24 Ryuuseika RAWRR v4c7
02/05/24 Ryuuseika RAWRR v4c6
02/05/24 Ryuuseika RAWRR v4c5
02/05/24 Ryuuseika RAWRR v4c4
02/05/24 Ryuuseika RAWRR v4c3
02/05/24 Ryuuseika RAWRR v4c2
02/05/24 Ryuuseika RAWRR v4c1
02/03/24 Ryuuseika RAWRR v3 epilogue
02/03/24 Ryuuseika RAWRR v3c12
12/02/23 Ryuuseika RAWRR v3c11
12/02/23 Ryuuseika RAWRR v3c10
12/02/23 Ryuuseika RAWRR v3c9
11/27/23 Ryuuseika RAWRR v3c8
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4 Reviews

Depression is my new friend
Depression i
Nov 30, 2021
Status: --
For me, this was just infuriating for one simple reason, the MC.

Oh, you don't have to read the entire thing cause it's nothing THAT important... maybe.. Actually it kinda is but again not that important. If you don't wanna read the whole thing, just skip to the last paragraph

He's way too unlikable and cringey for me. One person in the WN review stated the reason why and if you don't wanna bother clicking on links and stuff, I'll just type it here.

He's way too ret*rded and h**ny. Like, the first... more>> thing he tells the fMC (?) when he finds out that their partner is cheating on them is to have s*x. But I was kinda okay with it cause many won't be able to think rationally when similar cases happen.

But then, he keeps on stating about having s*x with her or being the one who will accompany her now as if the reason he wants to have revenge on his current cheater gf is not to get back at her but instead to get his hands on the fMC.

His statements seem a little too obvious regarding his thoughts simply giving the feeling/vibe that even if his gf had not cheated on him, and the fMC or someone as beautiful as her would have seduced the MC, he would effortlessly betray his gf and cheat on her.

The author kinda makes the fMC, a really all in one type of special character which I don't mind but it feels like he's purposely making the MC ret*rded in their plan to get back at their lovers, just to make the fMC more charismatic for the readers which kinda does not really work for me.

Also some ppl who have already read the chapters might say, "this is just fiction, the MC is not scum, the author simply wants to skip some inner monologue for the MC. It does not mean MC wants to break up just to have s*x with fmc"

But here's the thing, why bother with the turmoil fMC is going through if the author really did not wanna bother writing the emotional train wreck cause whatever he wrote regarding the emotions that the fMC was going through was really good. Even when MC provieded her with proof, she wanted to believe in her lover at least one last time showing how much she cared for her lover. Also, remember the key word "one last time" cause she was ready to give her bf a taste of hell if they found out any more proof which easily seperates her from many girls in LN and manga who refuse to believe that they have been cheated on no matter how many proofs they are given back to back. But with our MC, NOPE, his thoughts were simply, gf had s*x now I can have s*x with senpai. He did not have any similar thoughts regarding his gf until fMC brought up the topic that maybe it's not really what it seems to be and that they might be being a little too conscious. And mind you that the MC and fMC had the same amt of proof (from the pic that the MC took to how their lovers made excuse to cheat on them)

If the MC did not like her anymore, I think it would have been better but the fact that he almost cried thinking about the adultery shows he did at least care about their relationship or maybe his ego was simply hurt when his gf chose fmc's bf.

Even if the MC really wanted to just make the fMC his, he could have at least been a little cunning and discretive about it but no all he thinks of is s*x with fMC even in front of her without hiding it. Does he not have the feeling that in order to get back at her bf, it's not necessary for the MC to be involved. She can just take the help of some other guy. Now since the MC and fMC seem to at least be close friends in the past, maybe he trusted her and thought she would pick him for the plan. But if so at least try not to do smth that will make you seem repulsive even to your friends like who knows how, maybe by bringing up about having s*x or being lovers continuously?

So again, this is just my rambling regarding how ret*rded the MC was in the beginning. But since this LN is tagged as award winning, maybe I can at least keep my hopes a little higher? Maybe the MC being cringe is similar to how Subaru was cringey during his first interaction with Julius? Maybe similar to Subaru, he will redeem himself later on in the chapters? I won't read the web novel MTL cause I found out that the author changed his story drastically in the LN. I hope that me inhaling a sh*t ton of hopium would be worth it. Even if you read the whole ass thing I typed, don't let it make you skip this LN cause who knows you might regret it if it gets better. Instead, put a bookmaek on this LN for now and come back after 4-5 months when there will be enough chapters for your to make your own judgement. Currently I'm just rambling non stop regarding the beginning so who knows, it may actually get better cause I trust the award winning title but for now... yeah it's sh*t for me especially cause I've seen novels in kakuyomu which have similar start but have handled the characters ten times better than here. Even with the low ratings I gave it, I will continue reading it for the first two arcs or so and maybe change my rating, or heck the entire review if it gets better, which I really hope it does.

22 Likes · Like Permalink | Report
Feb 07, 2022
Status: --
A very good novel and good romance story. I told about LN version - this version is very different in the story quality from the web novell. One thing is that the novell has been translated in good quality only up to the 8th chapter, at the time of this comment writen. The version from AkumaBeast unfortunately differ greatly in the terms of quality from EloMTL translation.
BTW, this is a rare example of revenge against cheaters story...
4 Likes · Like Permalink | Report
Dec 13, 2021
Status: v3-4
Its really s*upid comedy. Its got "good" parts but reading in one session will make you scratch your head.


I think read this a week or a month ago but that 1st book was really s*upid. The MC, his gf, and the cheater are all simple open book character with the senpai having some character. Book 2 with the sisters was slightly better with the MC growing but the romance was cringe.

1 Likes · Like Permalink | Report
Sep 18, 2023
Status: v2c3
At first, I didn't really want to give this novel a chance, due to the premise and especially the title of the novel. However, after reading through the early parts of the chapters, I was positively surprised that they took it in a way where it did make sense, namely, first not having the fMC and MC have s*x right off the bat, but rather planning their cheating partners demise by collecting evidence of them cheating before announcing their dissolvement of their relationship.

Basically, what I'm saying is, is that the... more>> title really doesn't really mean anything, as they did nothing of the sort, but is rather a title to capture people's attention. Anyways, it was an enjoyable read, and I hope people will give it a chance.

0 Likes · Like Permalink | Report
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