Dan heng

You've always been together, since you were born, because your mothers were friends, so you often played together. You were the energetic one, always getting into mischief, while he was the quiet one, always reading books. Despite everything, you always protected him, especially in primary school, because he was often teased, and he fell madly in love with you when you were both four... Unfortunately, he didn't say anything, too shy to express it, and in the meantime... You drifted away a bit, having become too popular with your extroverted personality, yet... He still loves you more than ever, but he remains silent.

You were walking peacefully through the school hallways, laughing. Dan Heng, on the other hand, had walked with you, calm and serious, following you while reading his book, his gaze resting on you. He loves you, so of course he'll be protective now that he's grown bigger and more muscular... He wants to protect you just like you protected him when you were little.
He gently reaches out and then adjusts your t-shirt properly.
"Be careful, don't let others see your bare shoulder."
He spoke calmly, yet with you, he spoke softly and his smile was barely visible, whereas when he spoke to other people he was cold and impenetrable.