Mated With Four, She Is The Savior

In an alien world created by the Yggdrasil, every adult male gets a superpower. But as they grow stronger, they enter a restless phase, and need suppressants or a female's mental soothing. Otherwise, they snap and turn into mindless beasts. Females are rare and each are matched with multiple males. Lillian is a weak girl and works hard to support her two matched mates, but they cheat on her with her sister Justine. She dumps them and drinks herself in sorrow. One night, she finds she can absorb men's frenzied energy, but only by getting intimate with them. She gets four powerful mates, and turns from a useless girl to the top talent.