Four is the Lucky Number (Patreon)

Lena, Chantel, Somber and Asuka gather up and  work on their already impressive ,  physique and look at each other which gives them a push on their  massive backs to train   harder, better,  heavier,  away from muggles who desire to look like them one day, which will never come as they will keep growing and growing.

 Which leads   them to become biggest , most muscular beasts  ever walked among normal  people.