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Agatheina was a Goddess that truly had a long life, she had lived and experienced many things up until this point, but she had never felt like this for someone else in all of her life.
Until Kireina came into her life.
At first, she was her enemy, but she was promptly defeated by her, she was even left with a scar on her body…
Being taught a lesson, she decided to serve Kireina instead of fighting her, assuring the survivability of her children and well, of herself too.
But as she went by serving her, she got to know her better and much, much more.
And by a combination of many things such as admiration of her strength, intelligence, and personality, alongside the charming effect of Kireina's titles and skills, made her quickly fall in love with her.
After months of fighting together with her, of teaching her, and helping her, Kireina finally and happily answered her feelings with a very passionate night…
Check "The Protagonist's Sister Is Actually the Strongest"!