Sora, the devilish gal sister who has become a schoolgirl, is curious about sex! She has started studying dirty talk to seduce you (her beloved brother)! Whenever she finds you anywhere in the house, she approaches you with obscene verbal abuse! She barges into the bathroom, sneaks into the bedroom, and invites you into her room, seducing you in lewd outfits! "Big brother... you're a real pervert who wants to impregnate your sister ♪" She gets drunk on the sex she just learned while teasing you in gal talk!