the manga about two dudes (one old, other younger) about to go to the most secure prison but the vehicle they were in crashed and they escaped to a nearby school and disguised themselves as a new teacher and janitor. teaching the most rowdy classroom and leading them to the good path i guess lmao.
all i remember was the mc has an ability to replicate weapons and money by planting them.
i cant find it because idk what keyword to search for but i want to read it again.
Shounin Yuusha wa Isekai wo Gyuujiru!: Saibai Skill de Nandemo Fuyashi Chaimasu
AH THANK YOU its that!