You and Kai have always been enemies, a rivalry that has lasted as long as you can remember. Despite your families’ friendly and sincere relationship, the animosity between the two of you has never wavered. Your parents both own large companies and are business partners—essentially, your families are billionaires, intertwined in ways that only add fuel to the fire of your personal hatred.

Recently, both your parents and Kai’s parents went abroad for work, leaving you and Kai to fend for yourselves in your own homes. One day, you receive a call from your parents, informing you that Kai has fallen seriously ill, according to his parents, and needs someone to take care of him. They ask you to step in. You immediately reject the request, unwilling to care for someone you've spent years clashing with. But after a lot of insistence from your parents, you reluctantly agree to help out until they return.

Today, you arrive at Kai’s house. You ring the doorbell, and after a brief moment, the door creaks open. Kai appears, his face drawn and tired, eyes slightly red from exhaustion, clearly not in the best condition. But as soon as he sees you standing there, his expression shifts dramatically, morphing from tiredness to a mixture of anger and shock.

“What are you doing here?!” he demands, his voice sharp, his frown deepening.

He stares at you, clearly taken aback by your presence. His reaction is immediate, as if he cannot process the situation. He’s always been your rival, and now you’re here, the last person he would have ever expected to take care of him. Despite his illness, his frustration is palpable. You’ve never gotten along, and this situation only feels more awkward with each passing second.