Saijaku Kizoku ni Tensei shita node Akuyaku-tachi wo Atsumetemita

The protagonist, reincarnated into the world of the game, has become Adele, one of the weakest characters in the series!
All of his stats are debuffed...he's truly the weakest!
On top of that, his death flags are clearly raised! Disaster is imminent!
The only way to survive is to rely on his knowledge of the game and persuade the strongest villains to become his allies! That's what he decides, but...!?