Responses
Ooh this sounds close like 'What Death Taught Me'. Is this it (๑•ㅂ•)و✧ ?
Sadly it's not, it was a manga not a webtoon but thank you for the suggestion !! :)
Okayyyy I found it !! I didn't remember very well but it's senketsu oujo minna korosu !!
Does someone remember the name of the manga where a girl falls into a pit of giant monsters/insects after iirc the crown prince killed her sister and she survives but as a somewhat hybrid between human & monster and starts her revenge ??? I just remember some badass (and body horror) panel of her...