Biocores: The Legendary Weapon Designer - Chapter 67: Power of Intent

Being given a chance and reincarnated is nice and all, yet why do I have to become that male friend who just watches the protagonist flirting with his harem?---World: Kaguya-sama: Love Is War - Hyouka ----

The main character is reborn as a character from a game he played in his previous life. This character falls into ruin along with the villainess, spending the last of their years together. A man named Kururi Helan.

Revenge is merely a method of passing time for someone like Lee who has lived several lifetimes, but the desire to acquire superhuman, godlike powers becomes an obsession that pushes him beyond limits. It’s a struggle to grow up in the world ruled by masters who bend elements to their will, with little hope of learning their cultivation secrets, but they are still there for taking for those with wit, persistence and the ability to take risks.Join Lee on his adventurous journey where every challenge, setback and achievement brings him closer to divinity!

Chen Minhao found himself transmigrated to a parallel world in China, and he even became an idol trainee. By virtue of his efforts in mastering his IQ, EQ, and his looks as his weapons, he became a celebrity with a huge fan base step by step, and ultimately became a global superstar that conquered the both the fields of acting and singing.

- Description from Novelupdates