Humanity's Last Hope of Survival (Vol.1)

(A Splatoon Yuri Harem Crossover Series Fanfiction)

Kiyomi Amelia Rose is a young 18-year-old teenager, who enjoys living a peaceful and calm life in Phantom City with her family and girlfriend. All Kiyomi wanted to do in life is to achieve her dreams and live a quiet life without violence with the love of her life, but sadly that all changed for the worst for our girl. One night, Kiyomi discovered a secret abandoned lab deep underground and got a bit too curious for her own good. After exploring the lab, Kiyomi found an orb that seemed to be holding a dangerous power and after touching it, everything went dark. Without warning, a giant city level blazing explosion went off, destroying more than half of Phantom City and killing thousands upon thousands of citizens and when Kiyomi reawakened, she was in the middle of all of the chaos. Not to mention that after waking up, she has obtained a brand new power, but of course, at a deadly cost of destruction and death. However the worst has yet to come, as after one month of living through hell, tragedy struck once again as a massive tsunami swallowed the entire world, ending humanity...or so we thought. Timeskip towards 12,000 years into the future, Kiyomi reawakened from her deep slumber into a brand new world with new species ruling over Earth, making Kiyomi the last of her kind. Now in a new world, and keeping her promise, Kiyomi is determined to keep on surviving and adapt to this new life.

This is the start of Kiyomi's new life and towards the path of heroism. She'll become this new world's superhero, gain a massive harem of girls, make many friends, and fight tons of enemies. After all, she is humanity's last hope of survival.