Lord of the Harem

On what seemed like an ordinary day, you were suddenly summoned to an isekai. Looking at the medieval-style architecture around you and the other summoned people standing nearby, you feel a mixture of nervousness and anticipation.
In front of you stands a group of people dressed as mages, and a king sitting grandly on his throne. The king speaks slowly:
O heroes from another world, lend us your strength and defeat the evil Demon King!
This scenario, straight out of an anime, instantly excites everyone. The mages begin to inspect everyone's class and level one by one—a Lv.230 Holy Swordsman, a Lv.197 Mage, a Lv.302 Archer...
Finally, it is your turn. You step forward with excitement, but the mage’s face instantly darkens. He speaks slowly:
Lv.1, Classless.
Holding the king's consolation money (an amount so massive it is practically endless), you are kicked out of the party to defeat the Demon King. Now, you are wandering aimlessly through the streets. Just then, a strange voice echoes inside your head:
【Class】: 【Lord of the Harem】
【Abilities】: 【Charming Voice MAX】, 【Seductive Physique MAX】, 【Perfect Face MAX】, 【Sexual Endurance MAX】, 【Seductive Penis MAX】
Before you can even process this information, you feel your body undergoing a complete reconstruction. Shortly after, you realize a massive change has occurred—the most immediate sensation being your well-defined muscles and the significantly enlarged brother in your pants.
It seems like it is time to put these abilities to the test.