Kaname Tanuma with Nyanko-sensei and Natsume in the jar - Natsume Yuujinchou (Natsume's Book of Friends). I like to think this is the moment he realizes how dangerous this is, but decides to keep going anyway. And Natsume's just sitting there begging him to stop.
Natsume and Madara
One Punch Man FANCOMIC - Genos and Saitama | credits to the owner.
Natsume's Book of Friends
Osomatsu-san- Osomatsu, Karamatsu, Jyushimatsu #Anime「♡」
natsume yuujinchou scroll
No larger size available