Morning exercise (Patreon)

Koyama Rei is a friend of Kirishima Haruka, and they both go to the same university. Haruka is a student in the Department of Civil Engineering. She usually works as a porter on the construction site, so Haruka has extra body muscle training.

Rei is the school's track and field team, mainly good at sprinting.

Rei is a very strong Stud girl like Haruka, but in normal state, Haruka's physical fitness is still stronger than Rei, but in some situations Rei's physical ability will surpass Haruka.

Because Rei is a sprinter, her body can secrete a lot of hormones in a short period of time. Under certain conditions, she can play a physical quality that exceeds her age and training volume. Even she can reach her physical ability after 15 training in a while (equivalent to Manami's physical ability at the age of 30)

However, Rei's short-term physical ability explodes, and the side effects are also powerful. Her sexual function will be extremely low within a week, and her endocrine disorders will cause her to have hairy side effects. But after a week of rest, she can return to her normal state.

The huge penis does not affect Rei's running speed. As long as the penis is placed properly, the secretion of male hormones in her body and the powerful leg muscles can achieve a significant increase in speed in a short time. In terms of college students' sprint events, no male runner will even be her opponent.

"Can you run with me for a while? Then we can have some fun together, okay?"