The reason could be that he had a fall and is recovering. Or maybe he's waiting for someone and decided to sit on the ground while doing so.
Maybe he's tired and needs a rest.
Maybe he's enjoying the view or taking a break. It could be that the hill is a peaceful place for him.
He could be sad because he had a bad day or received some bad news. That's why he's just sitting there. Also, it might be that he's reflecting on past mistakes and feeling down.
Maybe he's on a fishing trip or just enjoying the scenery.
He could be there to relax and think about something. Or perhaps he's waiting for someone. The beach offers a peaceful place to unwind.
Well, it could be the combination of the character's posture, clothing, and the background. Maybe the way the character is sitting shows off their curves or the expression on their face is inviting. Also, the color palette and shading can enhance the sexiness.
It could vary a lot. Maybe he's looking relaxed with his legs crossed or might be slouching with a tired look.
Maybe he's just tired and wants to relax.
Maybe he's feeling down or had a rough day.
First, decide on the pose of the guy. Maybe he's relaxed or leaning forward. Sketch the shape of the chair, considering its style. For the guy, focus on proportion and add expression. Use light lines to start and darken when you're satisfied. It takes practice but have fun with it!
To draw this, begin with a rough sketch of the chair and the position of the guy. Add in the limbs and refine the features. Remember to give the guy a relaxed expression to show he's sitting comfortably.