Kyou kara Ore wa Loli no Himo!

I, Tendou Haru, who was somehow aiming to become a mangaka, became a winner in life: super-rich bishoujo elementary school student, Nijou Touka, was a big fan of mine and, on top of that, she said that she was going to be my patron. Just like that, my ideal lifestyle of living off someone had started.
(Source:NovelUpdates)