Frog Repays the Gratitude

An ordinary little frog secretly ate someone else's elixir and turned into a human form, even though her mother taught her to repay kindness. "Although I am a frog, I don't want to eat swan meat." A bird like this looks too ugly, and she doesn't want it. But this piece of white flesh on the bed suddenly opened its mouth, "Then I repay the favor and offer my life to you. How about you take me in?"