Mannen D-rank no Chuunen Boukensha, Yotta Ikioi de Densetsu no Ken o Hikkonuku - Vol. 2 Ch. 10 - Scorching Battle

[squerl]

"...so this is poison..."
"Don't worry! I've granted you resistance to poison!"
"Ah! I no longer feel the poison! You bastard, using poison on me...."
"What?! You've resisted my poison? Impossible! Well, I'll just have to use a stronger poison!"
"POISON!?!? ...will you be all right??"

this chapter

 

[Dragonbolt03]

@Velsy you also have to consider the possibility of blunting it, and causing it to be more suspectible to shattering

 

[RandomReader2023]

Man so nice seeing Aria beating his smug ass and finishing with: "Oh so you wanted my v-card so bad? A shame but I already gave to Lucas and now I'm HIS woman", Aria was savage this chapter, she roasted noble asshole both literally and figuratively.

And I also agree with the points made by previous comments the noble couldn't arrange people to gang up on Aria both because of his pride, but more important because his house wasn't so powerful to the point of messing with the Knights Academy and leaving unscatched.

Lucas said a few chapters ago that the country has a history of conquering through force despite being a small country, and this is the most pretigious academy within the kingdom to the point even nobles from other countries come here to train, that means it is the pride of this country and has much influence within it, so a noble ganging up on a single woman in public would probably prokove the higher ups from the academy and maybe even the King himself and guarantee some sort of retaliation to this same house.

 

[Naeko]

Somehow even with the plotting, it was just a normal match, he didn't even do any outfield support, he basically didn't cheat at all.
So we can conclude that 1, the author is the worst schemer ever or 2, the author knew that any actual difficulty would be too much for the MC party to beat so he tuned down the opposition.
Also, why did the bad guy wait 4 years? Was she untouchable for 4 years somehow? I don't really remember the earlier chapters but really, 4 years? She had actual no ability to beat him even 1v1 before yesterday and he's some money kid with infinite evil henchmen, 4 years how!
And the mostivations of the bad guy, he just flat out goes and says he gets off on rape, but somehow he has to beat her fair and square (with OP items) before he can rape her, is that like law in this world? Is there some god that decides what's okay rape and whats not okay rape? Why is this story making me ask what is considered okay rape in this madman of an authors mind.

This author makes whatever plot is convenient for the moment but didn't unify the continuity of the plot items. So there are a large number of contradictory plot holes as you have pointed out. I guess readers are either supposed to ignore the plot holes or are supposed to be too distracted by the sex innuendo to think about the plot logic.