After Becoming everyone’s Favorite, I went on a killing spree is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Growing up as an orphan in the arena, Ora was determined to awaken her summoner bloodline and gain immense power. However, her world turns upside down when she learns that the king has taken her loyal companion, Dragong, putting him in grave danger. In a daring escape, Ora and Dragong flee together, embarking on a series of thrilling adventures. Along the way, Ora hones her strength and resilience, while meticulously planning her revenge against those who have wronged her.