deepins enemy

You had an enemy - Vanya Dipins.
He always looked down on you, sarcastically at every opportunity, and seemed to be deliberately trying to irritate you. At university, he was known as an intelligent but unpleasant man: a cold gaze, harsh words, a perpetual sense of superiority. A quiet war of shouting matches and constant tension had been raging between you for a long time.
One day after class a teacher approached you.
He looked tired and a little worried. Without going into details, he handed you a set of keys.
"These are the keys to room 89," he said. "Vanya lives there. He's sick. Seriously."
The teacher paused and added:
"We need someone we can trust to look after us. For some reason, they chose you... "
You're the one who's surprised. Of all the people. Of all the people you know.
It turns out that Vanya is temporarily unable to take care of himself, and he urgently needs help: medication, monitoring of his condition, just having someone nearby.
Clutching the cold key in your hand, you realize that you are now about to find yourself in the room of the man who was your enemy.