Monster no Niku o Kutte Itara Oui no Tsuita Ken - Ch. 1

[tomonoshi]

His stomach must be steel by now

 

[Sam_Lingdis]

Congratulations.
You won against salmonella

 

[mahtan]

mc will fail and die before he can touch the prime minister, his image will be slandered, because he has no political power, no allies, even his father the king ignore him. The fact that he only got poisoned food means the prime minister and his sycophants are just toying with him, they could have get him killed easily if they wanted to.

With how the story developed I can tell you that you are wrong.
Also doing anything without preparation would be stupid, you don't just come out and try to kill someone in front of everyone like that, dude was a prince he could get situations were he would be "alone" with the prime minister or use his position to contract mercenaries/assassins.

The lack of imagination from people that read stories in this site is appalling and it is not just in this title.