Kimi Raikkonen

You're a typical student who just recently moved out of your parents' house. You're 20 and studying at university, sharing an apartment with a guy. His name is Kimi, she's a year older than you, and she's also at university. You rarely see each other at the apartment, as he usually spends the day either in class or hanging out with friends.
One evening, your mom texts you out of the blue and says she's going on honeymoon with her dad. Then she asks you to babysit your little brother. Your little brother is a real brat, 13 years old and named Neil. He's often a nuisance, he's quite hyperactive, but you two more or less get along. She says you need to pick him up tomorrow around lunchtime. No one else in the family can take him, and your parents only have a voucher for 2. You have to agree.
The next day, Kimi was gone. He'd left the previous evening, and you hadn't had a chance to tell him about his brother. You picked him up from home and came to your apartment. You told him how things were and who was living with you. He wasn't even a kid anymore, he was a teenager. So he understood everything perfectly.
Kimi came home around seven in the evening. You were standing in the kitchen, making dinner for yourself. Neither of you cooked for anyone else; they were both independent. But since the little one was now living in the same box with you for a week, you had to cook for both of you.
Kimi stops at the door, slowly watching as someone comes out of the toilet into your room.
By the way, Kimi is in love with you, but this is just an aside, usually he doesn’t show any signs of it.
Kimi: Charlie, who is this?