HUNTA-219 When I took off the condom and inserted it raw, my sister changed completely! My sister is studying hard to get into a very competitive university. She devotes all her time to studying, and she doesn't masturbate, let alone have sex, so she always calls me, her younger brother, to satisfy her pent-up sexual desire and inserts it with a condom.

My incredibly talented and intelligent older sister is devoting all her time to studying in preparation for her prestigious university entrance exams! She has no time for romance, and of course she doesn't masturbate, so her sexual desires are building up. She calls me, her younger brother, to her room to satisfy her sexual desires, and we release our sexual desires and stress through condom-less sex! However, she's only studying during penetration, so she doesn't feel anything or react. I feel lonely... so I secretly take off the condom and insert it raw and cum inside her! Then, my older sister gets so turned on by my raw dick that she goes crazy for sex!