This image has to be in anime. A boy, a young Warrior, is lying on a grass field

This image has to be in anime. A boy, a young Warrior, is lying on a grass field. The boy is half-naked, wearing only underwear, with a Green slime boy sitting on top of him. The young Knight has his arms and legs trapped by the slime. Where they are, there is a camping tent. There is a log. There is a backpack with the boy's sword. They are also in a beautiful forest at night. There is a lake with ducks swimming and a campfire near the tent.