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...
Sorry, if ask but can you please look at my requests and tell if you have it?
https://www.anime-sharing.com/threads/request-211210-rj361498-tentacle-works-テンタクルワークス-賢者ちゃんとhな触手.1392118/
https://www.anime-sharing.com/threads/request-231104-rj01109498-takotubo-タコツボ-つくよヴィレッジ.1397470/
https://www.anime-sharing.com/threads/request-misotake-みそテイク-multiple-games.1404036/