Yuusha Dakedo, Maou Kara Sekai Wo Hanbun Moratte Uragiru Koto ni Shita

As a hero, I have been doing my best up until now. Even with little reward, unreliable comrades, citizens that only keep complaining and a princess that only treats me like a tool, I still do my best without a word of complaint. I finally gave up after being rejected by the girl I like, being betrayed by my comrades and not receiving any recognition despite my best efforts. Thus… even though I’m the hero, I decided to betray after receiving half of the world — This is a story of the hero that is always trying his best being showered with love by a small demon king girl.