The plain and unnoticed sister-in-law transformed into a stunning beauty with her brother's advice! As she learned makeup, her brother couldn't hold back any longer and confessed his feelings. However, she rejected him saying they were 'siblings.' He proposed, 'Even if we don't insert it, just rubbing together is fine...' The two agreed to only do frottage, but her vagina was too wet, leading to immediate penetration! She tried to stop him with a 'No,' but once the line was crossed, their youthful sexual desires couldn't be stopped, resulting in internal ejaculation. After that, the two…
