Dragonball Z. Guarantee Toriyama knows all about that semen retention = superpowers.
>Entire series is about bettering yourselves by training and raising your ki power.
>As per Chinese and Hindu traditions, ki (or chi) is your spiritual energy, that is depleted when semen is ejected from the body. Sexual energy is the gross use of ki in a nutshell. When it is conserved, it provides source of all creativity and high productive energies.
>Goku/Vegeta are also never involved in lust fueled or romantic storylines, unlike western superheroes. There was only one episode where Chichi kept hitting on Goku for marriage, but Goku had no idea what marriage even was. He couldn't even tell a beautiful girl from an ugly one in Dragonball.
>Broly in the latest movie basically grows to 40 in isolation, just training with his father. He wrecks everyone. Goku in DBZ goes away for years just to train.
>Show is masculine as fuck, Saiyans are basically space vikings.