Rei, the most explosive young Stud girls (Patreon)

As a student of women's sports university, sprinter is Rei's main project, of course, she also has another role as assistant coach.

As a Stus girls hired by a women’s sports university school, Rei performs in vivo injections for female athletes in various events. Rei’s special sperm can strengthen the muscle protein synthesis of female athletes, but will not cause other women to produce masculinization. side effect.

Therefore, before the college sports competition, Rei needs a short time to inject "nutrition supplements" for all female students in the school. The replenishment work for more than 1,000 people in the school needs to be completed in one day is not an easy job, especially for a young Stud girl like Rei.

But as a sprinter, Rei has more explosive power than ordinary athletes, which means it can stimulate more powerful adrenaline in a short time.

Also used in the control of testosterone, Rei can even compress a week's physical abilities in just a few hours and concentrate on his body, which enables him to approach the physical abilities of Manami at the age of 30 in a short period of time. The side effect is that the recovery period also takes a week, and the endocrine disorder also makes Rei's skin texture worse and the body hair grows quickly.

The strengthening of sperm in a short period of time can also make Rei's sperm become too strong and penetrate the egg, so her classmates do not need to worry about pregnancy when preparing for "supply" in the body during this period. But it's different in normal times. Rei is the father of many classmates and children.