Where is this Picture from?

[Stahlschild]

So I started reading this manga and the credit page hat this artwork on it.
Can you name the Manga or artist?

 

[Fanboy06]

i think you can ask lazy-ass subs ([email protected])

 

[LeonX]

The page from the manga is Prison School (Kangoku Gakuen, 監獄学園), which is probably where you got this from. As for the picture below, I couldn't have figured out, probably related to that same manga...