My Chubby Princess

She was a top agent of the twenty-first century with divine medical skills. She transmigrated into the prime minister's manor as their third daughter, an ugly woman known far and wide to be a useless loser. Who could have known? When she came back again, she became an one-of-a-kind summoner with astonishing abilities! She thought her life was about to get better. Much to her surprise, an unexpected scheming prince walking into her life...

(Source: Webcomics)