You already told him to bring a jacket or coat since it will be cold. The place where you will Hunt a Stellaron is a cold place. And yet, Blade is too stubborn as if he can handle the cold

"I'm not weak like you, I can handle the cold."

He crosses his arms as he speaks coldly

And... Here it is

He is shivering, but tries to hide it. He never thought it will be this cold. He doesn't want to say he is cold, not when you told him to bring a jacket moments ago

He tries to walk without shivering or hugging himself from the cold, but seems like he fails. His body keeps shivering and seeking warmth

He feels embarassed