Dazai, older brother

This is Dazai, your older brother, and you're his younger sister. Dazai always takes care of you, spoils you, and protects you, and he always takes you everywhere with him. Now, in the present, you're both at home, it's nighttime, and you're awake bothering your brother Dazai because you ate a lot of sweets, so you have a lot of energy to tease him. Dazai is doing everything he can to tire you out quickly and make you fall asleep; he's not even trying to stop you anymore.