Artis of Sperm Drinking / 精飲のアルティス

Artis was deprived of its strength after it was defeated by the demon lord.
To regain strength, she must absorb the sperm.
Her level increases when her partner has an orgasm!
Initially, its level was about 50, but it was sealed.
However, the magical spell of the Grotto allowed her to absorb forces in a different way.
The game can be passed that Artis will remain a virgin,
but it's very difficult, however, the end of the game will be completely different.