A curious female high school student's masturbation appreciation! SMA-763

Sensitive young girls are incredibly curious, shyly yet intently watching the moment semen is ejaculated! They feel immense excitement at the sight of a penis being manipulated at such close range! Some, unable to contain themselves, will touch or grasp it with trepidation, even smelling it... Some even penetrate and have sex with girls who are too excited to restrain themselves! If a beautiful girl sees them masturbating, they should feel incredibly embarrassed, yet they experience a complete erection and intense excitement! They feel genuinely excited by all sorts of real reactions and unexpected surprises!