Cleaning out Onii-chan's room today and found his secret sketchbook. Turns out he's been drawing us! There were pages of my K-cups spilling out of my school uniform and Aki's massive S-cups pressed against the window. The most detailed one was of both our tongues swirling around the head of his cock. It's so hot knowing he fantasizes about us while we're at school. Maybe we should 'accidentally' leave our matching lace panties in his bed tonight? 😈 We love being your little perverted muses, Onii-chan! #SisterGoals #StepSiblingLove #ArtistAndHisMuses