I Picked Up the Second Male Lead After the Ending is a Manga/Manhwa/Manhua in english language, ladies series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

I transmigrated inside the novel of my favorite character, the second male lead.
A tsundere who listens to all the words of the female lead while grunting, with a straight forward personality, and a handsome face.
Matching all my preferences, he was even single after the ending.
Nice! I’ll pick up the second male lead!
However, I overlooked one thing…
The tsundere, who had been abandoned by the female lead blackened, and had become a terrifying man!
“Get lost.”
…I, Is it safe for me to pick up the second male lead?