My niece came to stay for the summer and I let her drink – Anzuworks

During a hot, hot summer break, your niece comes to stay.
She gets thirsty, so you give her the only drink you have in the fridge – guarana.
For some reason it has a strange effect on her, and she starts to get hot and bothered.
She begs you to do something to help her, which leads to sexy situations.