Kanojo ga Senpai ni NTR-reta node, Senpai no Kanojo wo NTR-masu - Vol. 3 Ch. 13 - The Night Before the Decisive Battle

[MangaDex]

 

[MiguelH224]

I say he's an ally, that look he gave Tetsuya when he took that phone call at the beginning of The ch tells me everything I needed to know

 

[Coldlight]

Don't tell me Rumi is also cheating on Junpei with Tetsuya, but if that's the case that'll help bring him into the fold with their revenge plan. On the other hand, if it's true she can also pass any info she catches to that fuckboy and alert him.

I hope the revenge goes as planned, I'd hate for the one thing this has been building up to, to just fizzle out. This already got axed, at least go out with a bang...

 

[HYBRID_BEING]

Don't think it takes two parents with medical degree to apply a bandaid, lol.

 

[ShinduPK4]

Wait, wasn't Rumi Ishida's (MC's friend's) sister? If she's cheating too, this will turn into an even bigger spectacle.