I can upgrade the shelter - Chapter 75: Algae Cycle Oxygen Production and Power Generation

I was reborn as the villainous daughter, Yumiela Dolknes, in the world of an otome RPG game. Yumiela only had a small role in the original story, but after defeating the Demon King, she will appear as the Hidden Boss with a bonus specs to solo fight the Hero party.

Having a gamer-spirit, I’ve been raising my level since I was a child. By the time I enter the academy where the game stage is, I was level 99.

I wanted the heroine and the capture targets to defeat the Demon King, but they just flirted around and didn’t raise their level. Moreover, they treat me as if I’m the Demon King just because I have dark hair and use dark magic.

It’s a story where I aim for peaceful days.

Alexander is a top tycoon in America, with countless wealth under his name. Unfortunately, he is already 90 years old this year, and his life is coming to an end.

However, just as he was prepared to face death calmly, a system descended upon him and assigned him a mission: to establish a massive harem.

Alexander said, “At this point in my life, the only thing hard in my body is my bones. Some abilities haven't been used for decades.”

System replied, “No problem, this is a magical blue pill. After taking it, you will have amazing power!”

Alexander said, “In that case, I won't be polite!”

Please note that this is a harem-type novel, where the MC will build an incredibly large harem team, and this will become the goal of his life-long struggle.

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