3 part history from Higenamuchi.
Taken from:
Gohaishaku! - COMIC Kairakuten 2013-04
Goenchou! - COMIC Kairakuten 2013-05
Gohenkyaku! - COMIC Kairakuten 2013-06

Well it's not exactly netorare

@redbone: I will agree with you but all his works are like this. Soft core cheating and netorare

Base +8, Morgoth666 +9, stupid army +9, EdoubleT +10

de por si me confunden los titulo japoneses, estas simplemente se saltaron la barda, pero wueno, esto ami parecer para mas una combinacion de infidelidad que ntr, puesto que el el wey sancheado ni en cuenta, pero la diablilla mujer sigue insistienndo en seguirle el juego y pos es un punto mas para el ntr, pero en fin, ojala y tenga continuacion para asi acabar por decir "mejor" la historia

Base +10

Oh shit, I've been waiting for this.

Base +8, Zero Angel +36, EdoubleT +8, Ser Maggot +7, Miriah +7

@kakolukio: it is ntr, its just "meh" ntr, the bf was barely in it and on top of that didn't even have a face so you couldn't connect with him....

Base +14, acslipknot -8, Kabdra +12, EdoubleT +10

@rebone: Cheating then.

Base +7, stupid army -9, acslipknot +8, surevalla +7

Meh, the artist has nice art, but just don't be feeling the cheating stories....Oh well, I'll pass.

Base +7

i dont get the ending, pls moonrune masters elaborate

edit: dharumas thanks mate

Base +6, cypher0 +9

@plahplah

The third part, starts with her wanting to end the whole situation with netori guy, since she just got proposed by her boyfriend, netori accepts to end it but gives her the condition that she has to become his lover for 1 full week, after that he will leave her alone. She accepts to do so in page 41 and those hearts between the panels mean her heart being captured.

At the end of pag 48 Netori ask hers out for real, this is pretty much the average finisher line from netorare histories...
"Our bodies are soo compatible, i can make you feel better than your boyfriend, if you choose me i'll make you feel this good every day and night. So say it! say you will break with him and date me". While netori is asking her all this, she is thinking that the sole fact of being with her boyfriend make her happy, yet feeling this good is obviously making her happy too.

Pag 50, at this point she seems to snaps out of it and wonders why she is having such a hard time answering an easy question like this one, then she says "Im not breaking with him, I definitely will not break with him...so". At this point the history seems to go for the happy ending route... yet next page...

Pag 51: Netori guy reaction is "correct! amazing! You are the best " "if you wanted to keep doing it with me, there was no other answer than that" so ... basically she understood that if she breaks with her boyfiend, netori would lose his interest in her, denying to break her relationship allows her to keep seeing the other dude...
Last page: she now wearing his BF engagement ring, thinking "from now on we will keep being together right"

TL/DR version: She doesnt break with her boyfriend and get engaged with him, due to the fact netori guy is only interested in "another people's girlfriends", if she would had choose to break with her bf, the other dude would have left her too.

Base +13, ShikiN7 +5, rekkou +9, BlackwaterKR +11, gazgamentulus +12, EdoubleT +10, Ser Maggot +7, georgef35 +7, Flammz +7, distels +9, mindyourwords +6, Duc Nghiem Xuan +6

I agree with Redbone, this is "meh NTR" because we didnt see his face.

At the end, the girl is just a CAKE EATER.

Base +7