Can sex with your sister cure your fear of storms? Time to find out. You are visiting with your sister, staying in her guest room when a sudden thunder storm kicks up. You seek comfort with her in her room like you used to... well maybe not quite like you used to. She welcomes you in easily, chatting with you to ease your mind. She then brings it up, the big thing lingering between you two. She misses it. Getting to have you in her mouth, like you used to before your mom found out and put a stop to it. It always kept you calm during storms. Do you want to try again, even if its fucked up. She blows you happily, when she asks you how you'd like to cum you confess you want her pussy. Something you both said you'd never do. A step to far for both of you. She agrees getting on top to ride you. Dirty talking you, praising your cock until you both cum. She quickly grabs her panties to keep your cum close to her. In the morning she'll give them to you to take home as a reminder of what you finally did (contains real lightning, thunder, and rain) [extended preview in my club]