The Demon Lord Thinks I Have a Crush on Him

Su Qingye, a great general from a matriarchal kingdom, transmigrates one day and becomes a junior female disciple of noble birth and formidable strength in the cultivation world. But she can't stop worrying about her frail, helpless imperial brother. The next day, the academy opens its immortal-versus-demon arena, and Su Qingye takes the stage to spar with Chang Huo, the young lord of the demon clan. She discovers that Chang Huo looks exactly like her imperial brother, right down to the scar at his collarbone. During a lull in the fight, Su Qingye can't help reaching out to straighten Chang Huo's collar and cover his half-bared chest. Their eyes meet. The demon lord's eyes turn bloodred as he asks coldly, "What are you doing?" Su Qingye answers with complete sincerity, "...It's cold. Be careful not to catch a chill." Chang Huo: "Hmph." The lava on the arena is hot enough to melt them alive. - The soon-to-be Demon Lord never lets anyone come within three feet of him. Whenever he wants to teach Su Qingye a lesson and make her disappear from right under his nose... A cup of warm water is held out in front of him, steam curling above it. Su Qingye: Drink more hot water. Chang Huo swallows the word "disappear," takes the cup, and feels warmth spread from his palm to his heart. One day, Chang Huo lowers his eyes, presses his lips together, and makes up his mind. "Stop bothering me." Su Qingye, just as he asked, readily vanishes from Chang Huo's world. But a month later, he corners her in the library. Chang Huo lowers his lashes, his voice soft. "Su Qingye, is that all the patience you have when you're pursuing someone?" (Beautiful and badass, with overwhelming combat strength, hardcore junior disciple x noble and icy, soft to kindness but not force, black-hearted Demon Lord) P.S. They are not related. Theme: Warm the people around you with kindness and compassion.